U.S. Supreme Court, (April 17, 1967)
Docket number: 110
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U.S. Court of Appeals for the 3rd Cir. - New Jersey County and Municipal Council #61, American Federation of State, County and Municipal Employees, Afl-Cio, Et Al., Appellees, v. American Federation of State, County and Municipal Employees, Afl-Cio, Et Al., Appellants., 478 F.2d 1156 (3rd Cir. 1973) American Federation of State, County and Municipal Employees, Afl-Cio, Et Al., Appellees, v. American Federation of State, County and Municipal Employees, Afl-Cio, Et Al., Appellants.
U.S. Supreme Court - NLRB v. Longshoremen, 447 U.S. 490 (1980)
U.S. Supreme Court - NLRB v. Operating Engineers, 400 U.S. 297 (1971)
U.S. Supreme Court - Federal Energy Administration v. Algonquin SNG, Inc., 426 U.S. 548 (1976)
U.S. Court of Appeals for the 6th Cir. - Canada Dry Corporation, Detroit Coca-Cola Bottling Company, Faygo Beverages, Inc., Pepsi-Cola Metropolitan Bottling Company, Inc., Seven-Up Bottling Company of Detroit, the Squirt-Detroit Bottling Co., Vernors, Inc.; and Wyandotte Coca-Cola Bottling Co., Petitioners, v. National Labor Relations Board, Respondent, and Retail Store Employees Union, Local No. 876, Retail Clerks International Association, Afl-Cio, Intervenor. the Independent Biscuit Company, Petitioner, v. National Labor Relations Board, Respondent, and Retail Store Employees Union, Local No. 876, Retail Clerks International Association, Afl-Cio, Intervenor., 421 F.2d 907 (6th Cir. 1970) Detroit Coca-Cola Bottling Company, Faygo Beverages, Inc., Pepsi-Cola Metropolitan Bottling Company, Inc., Seven-Up Bottling Company of Detroit, the Squirt-Detroit Bottling Co., Vernors, Inc.; and Wyandotte Coca-Cola Bottling Co., Petitioners, v. National Labor Relations Board, Respondent, and Retail Store Employees Union, Local No. 876, Retail Clerks International Association, Afl-Cio, Intervenor. the Independent Biscuit Company, Petitioner, v. National Labor Relations Board, Respondent, and Retail Store Employees Union, Local No. 876, Retail Clerks International Association, Afl-Cio, Intervenor.
U.S. Court of Appeals for the 7th Cir. - Kable Printing Company, Petitioner, v. National Labor Relations Board, Respondent, and Local No. 245, Graphic Arts International Union, Afl-Cio, Intervenor. Kable Printing Company, Petitioner, v. National Labor Relations Board, Respondent, and Graphic Arts International Union Afl-Cio, and Graphic Arts International Union, Local 277, Intervenors., 540 F.2d 1304 (7th Cir. 1976) Petitioner, v. National Labor Relations Board, Respondent, and Local No. 245, Graphic Arts International Union, Afl-Cio, Intervenor. Kable Printing Company, Petitioner, v. National Labor Relations Board, Respondent, and Graphic Arts International Union Afl-Cio, and Graphic Arts International Union, Local 277, Intervenors.
U.S. Supreme Court Reports WOODWORK MANUFACTURERS v. NLRB, 386 U.S. 612 (1967) WOODWORK MANUFACTURERS v. NLRB, 386 U.S. 612 (1967) 386 U.S. 612
NATIONAL WOODWORK MANUFACTURERS ASSOCIATION ET AL. v. NATIONAL LABOR RELATIONS BOARD. CERTIORARI TO THE UNITED STATES COURT OF APPEALS FOR THE SEVENTH CIRCUIT. No. 110. Argued January 18 and 19, 1967. Decided April 17, 1967.* [Footnote *] Together with No. 111, National Labor Relations Board v. National Woodwork Manufacturers Association et al., also on certiorari to the same court. A general contractor (Frouge) working on a housing project in Philadelphia was subject to a collective bargaining agreement between a local carpenters' union and a general contractors' association in which it was agreed that union members would not handle premachined doors. Frouge, whose contract would have permitted " blank" doors, ordered premachined doors from a manufacturer, a member of the National Woodwork Manufacturers Association (NWMA). When the Union ordered its members not to hang the premachined doors, Frouge substituted " blank" doors, which the carpenters fitted and cut at the jobsite. The NWMA filed charges against the Union with the National Labor Relations Board (NLRB), claiming that by including the " will not handle" provision in the collective bargaining agreement and enforcing it, the Union violated two provisions which the Landrum-Griffin Act respectively added to and amended in the National Labor Relations Act - 8 (e), which makes it an unfair labor practice to enter into an agreement that an employer will refrain from handling the products of another employer and 8 (b) (4) (B), which makes it an unfair labor practice to force a person to cease using the products of another manufacturer. The NLRB dismissed the charges, adopting its Trial Examiner's findings that the " will not handle" provision had as its object the preservation for jobsite carpenters of cutting out and fitting work which they had customarily performed and its enforcement against Frouge constituted " primary activity" not prohibited by 8 (e) and 8 (b) (4) (B). The Court of Appeals reversed the dismissal of the 8 (e) charge, concluding that the " will not handle" provision was designed to effect a product boycott like that condemned [Page 386 U.S. 612, 613] in Allen Bradley Co. v. Union, 325 U.S. 797; and the NLRB petitioned for certiorari (No. 111). The court sustained dismissal of the 8 (b) (4) (B) charge, agreeing with the NLRB that the Union's conduct as to Frouge was a primary dispute and as such came within the exemption proviso of Clause (B); and the NWMA petitioned for certiorari (No. 110). Held: 1. Section 8 (b) (4) (B) was enacted, not to prohibit primary agreements and primary action directed to work preservation, but to prohibit " secondary" objectives, i. e., the exertion of pressure on a neutral employer. Pp. 619-633. (a) Congress has stopped short of proscribing activity to pressure the employer for agreements regulating relations between him and his own employees. P. 620. (b) The predecessor of 8 (b) (4) (B) (the basic thrust of which was not changed by the Landrum-Griffin amendments) was enacted to eliminate the " secondary boycott" designed to injure the business of a third person not concerned in the disagreement between an employer and the union. Pp. 623-626. (c) Judicial decisions interpreting the predecessor of 8 (b) (4) (B) uniformly limited its application to " secondary" situations, and this Court has consistently refused to read the provision as banning traditional primary labor activity having an impact on neutral employers, even though such activity fell within the literal terms of the provision. Pp. 626-627. (d) Allen Bradley Co., supra, distinguished. Pp. 628-631. (e) In rewriting the predecessor provision as 8 (b) (4) (B) Congress confirmed the limited application of the section to " secondary" conduct, adding the proviso that nothing therein " shall be construed to make unlawful, where not otherwise unlawful, any primary strike or primary picketing." Pp. 632-633. 2. Section 8 (e) likewise does not reach employees' primary activity and does not prohibit agreements made to pressure their employer to preserve for themselves work traditionally done by them. Pp. 633-642. (a) The addition of 8 (e) to the Act was designed to plug a loophole resulting from Carpenters' Union v. Labor Board (Sand Door), 357 U.S. 93, in which it was stressed that the mere execution of or an employer's voluntary observance of a " hot cargo" clause did not violate the predecessor of 8 (b) (4) (B). Pp. 634-635. [Page 386 U.S. 612, 614] (b) The legislative history of 8 (e) and provisos preserving the status quo in the construction industry and exempting the garment industry from the prohibitions of 8 (e) and 8 (b) (4) (B) indicate that primary work-preservation agreements were not to be within the ban of 8 (e). Pp. 635-642. 3. Substantial evidence supported the Trial Examiner's finding, adopted by the NLRB, that the " will not handle" provision was designed to preserve work traditionally performed by jobsite carpenters, and that the Union's making of the " will not handle" agreement and its maintenance thereof did not respectively violate 8 (e) and 8 (b) (4) (B). Pp. 645-646. 354 F.2d 594, affirmed in No. 110 and reversed in No. 111. Charles B. Mahin argued the cause and filed briefs for petitioners in No. 110 and for respondents in No. 111. Dominick L. Manoli argued the cause for respondent in No. 110 and for petitioner in No. 111. With him on the briefs were Solicitor General Marshall, Arnold Ordman and Norton J. Come. Briefs of amici curiae were filed by William B. Barton and Harry J. Lambeth for the Associated Builders & Contractors, Inc.; by Gerard D. Reilly and Winthrop A. Johns for the Associated General Contractors of America et al.; by Kenneth C. McGuiness and Stanley R. Strauss for the American Boiler Manufacturers Association; and by J. Albert Woll, Robert C. Mayer, Laurence Gold and Thomas E. Harris for the American Federation of Labor and Congress of Industrial Organizations. MR. JUSTICE BRENNAN delivered the opinion of the Court. Under the Landrum-Griffin Act amendments enacted in 1959, 73 Stat. 542, 8 (b)(4)(A) of the National Labor Relations Act, 61 Stat. 141, became 8 (b) (4) (B) and 8 (e) was added. The questions here are whether, in the circumstances of these cases, the Metropolitan District Council of Philadelphia and Vicinity of the United [Page 386 U.S. 612, 615] Brotherhood of Carpenters and Joiners of America, AFL-CIO (hereafter the Union), committed the unfair labor practices prohibited by 8 (e) and 8 (b) (4) (B).[Footnote 1] Frouge Corporation, a Bridgeport, Connecticut, concern, was the general contractor on a housing project in Philadelphia. Frouge had a collective bargaining agreement with the Carpenters' International Union under which Frouge agreed to be bound by the rules and regulations agreed upon by local unions with contractors in areas in which Frouge had jobs. Frouge was therefore subject to the provisions of a collective bargaining agreement between the Union and an organization of Philadelphia contractors, the General Building Contractors Association, Inc. A sentence in a provision of that agreement entitled Rule 17 provides that " . . . No member of this District Council will handle . . . any doors . . . which have been fitted prior to being furnished on the job . . . ." [Footnote 2] Frouge's Philadelphia project called for 3,600 doors. Customarily, before the doors could be hung on such projects, " blank" or " blind" doors would be mortised for the knob, routed for the hinges, and beveled to make them fit between jambs. These are tasks traditionally [Page 386 U.S. 612, 616] performed in the Philadelphia area by the carpenters employed on the jobsite. However, precut and prefitted doors ready to hang may be purchased from door manufacturers. Although Frouge's contract and job specifications did not call for premachined doors, and " blank" or " blind" doors could have been ordered, Frouge contracted for the purchase of premachined doors from a Pennsylvania door manufacturer which is a member of the National Woodwork Manufacturers Association, petitioner in No. 110 and respondent in No. 111. The Union ordered its carpenter members not to hang the doors when they arrived at the jobsite. Frouge thereupon withdrew the prefabricated doors and substituted " blank" doors which were fitted and cut by its carpenters on the jobsite. The National Woodwork Manufacturers Association and another filed charges with the National Labor Relations Board against the Union alleging that by including the " will not handle" sentence of Rule 17 in the collective bargaining agreement the Union committed the unfair labor practice under 8 (e) of entering into an " agreement . . . whereby [the] employer . . . agrees to cease or refrain from handling . . . any of the products of any other employer . . .," and alleging further that in enforcing the sentence against Frouge, the Union committed the unfair labor practice under 8 (b) (4) (B) of " forcing or requiring any person to cease using . . . the products of any other . . . manufacturer . . . ." The National Labor Relations Board dismissed the charges, 149 N. L. R. B. 646.[Footnote 3] The Board adopted the findings [Page 386 U.S. 612, 617] of the Trial Examiner that the " will not handle" sentence in Rule 17 was language used by the parties to protect and preserve cutting out and fitting as unit work to be performed by the jobsite carpenters. The Board also adopted the holding of the Trial Examiner that both the sentence of Rule 17 itself and its maintenance against Frouge were therefore " primary" activity outside the prohibitions of 8 (e) and 8 (b) (4) (B). The following statement of the Trial Examiner was adopted by the Board: " I am convinced and find that the tasks of cutting out and fitting millwork, including doors, has, at least customarily, been performed by the carpenters employed on the jobsite. Certainly, this provision of rule 17 is not concerned with the nature of the employer with whom the contractor does business nor with the employment conditions of other employers or employees, nor does it attempt to control such other employers or employees. The provision guards against encroachments on the cutting out and fitting work of the contract unit employees [Page 386 U.S. 612, 618] who have performed that work in the past. Its purpose is plainly to regulate the relations between the general contractor and his own employees and to protect a legitimate economic interest of the employees by preserving their unit work. Merely because it incidentally also affects other parties is no basis for invalidating this provision. " I find that . . . [the provision] is a lawful work-protection or work-preservation provision and that Respondents have not violated Section 8 (e) of the Act by entering into agreements containing this provision and by thereafter maintaining and enforcing this provision." 149 N. L. R. B., at 657. The Court of Appeals for the Seventh Circuit reversed the Board in this respect. 354 F.2d 594, 599. The court held that the " will not handle" agreement violated 8 (e) without regard to any " primary" or " secondary" objective, and remanded to the Board with instructions to enter an order accordingly. In the court's view, the sentence was designed to effect a product boycott like the one condemned in Allen Bradley Co. v. Local Union No. 3, 325 U.S. 797, and Congress meant, in enacting 8 (e) and 8 (b) (4) (B), to prohibit such agreements and conduct forcing employers to enter into them. The Court of Appeals sustained, however, the dismissal of the 8 (b) (4) (B) charge. The court agreed with the Board that the Union's conduct as to Frouge involved only a primary dispute with it and held that the conduct was therefore not prohibited by that section but expressly protected by the proviso " [t]hat nothing contained in this clause (B) shall be construed to make unlawful, where not otherwise unlawful, any primary strike or primary picketing . . . ." 354 F.2d, at 597. [Page 386 U.S. 612, 619] We granted certiorari on the petition of the Woodwork Manufacturers Association in No. 110 and on the petition of the Board in No. 111. 384 U.S. 968. We affirm in No. 110 and reverse in No. 111. I. Even on the doubtful premise that the words of 8 (e) unambiguously embrace the sentence of Rule 17,[Footnote 4] this does not end inquiry into Congress' purpose in enacting the section. It is a " familiar rule, that a thing may be within the letter of the statute and yet not within the statute, because not within its spirit, nor within the intention of its makers." Holy Trinity Church v. United States, 143 U.S. 457, 459. That principle has particular application in the construction of labor legislation which is " to a marked degree, the result of conflict and compromise between strong contending forces and deeply held views on the role of organized labor in the free economic life of the Nation and the appropriate balance to be struck between the uncontrolled power of management and labor to further their respective interests." Local 1976, United Brotherhood of Carpenters v. Labor Board (Sand Door), 357 U.S. 93, 99-100. See, e. g., Labor Board v. Fruit & Vegetable Packers, ; Labor Board v. Servette, Inc., 377 U.S. 46; Labor Board v. Drivers Local Union, 362 U.S. 274; Mastro Plastics Corp. v. Labor [Page 386 U.S. 612, 620] Board, 350 U.S. 270; Labor Board v. Lion Oil Co., 352 U.S. 282; Labor Board v. International Rice Milling Co., 341 U.S. 665; Local 761, Electrical Workers v. Labor Board, 366 U.S. 667. Strongly held opposing views have invariably marked controversy over labor's use of the boycott to further its aims by involving an employer in disputes not his own. But congressional action to deal with such conduct has stopped short of proscribing identical activity having the object of pressuring the employer for agreements regulating relations between him and his own employees. That Congress meant 8 (e) and 8 (b) (4) (B) to prohibit only " secondary" objectives clearly appears from an examination of the history of congressional action on the subject; we may, by such an examination, " reconstitute the gamut of values current at the time when the words were uttered." [Footnote 5] The history begins with judicial application of the Sherman Act (26 Stat. 209) to labor activities. Federal court injunctions freely issued against all manner of strikes and boycotts under rulings that condemned virtually every collective activity of labor as an unlawful restraint of trade.[Footnote 6] The first congressional response to [Page 386 U.S. 612, 621] vehement labor protests came with 20 of the Clayton Act in 1914. That section purported drastically to limit the injunction power of federal courts in controversies " involving, or growing out of, a dispute concerning terms or conditions of employment." In terms, it prohibited restraining any person from " ceasing to perform any work or labor" or " from ceasing to patronize or to employ any party to such dispute, or from recommending, advising, or persuading others by peaceful and lawful means so to do." 38 Stat. 738. Labor hailed the law as a charter immunizing its activities from the antitrust laws. This expectation was disappointed when Duplex Printing Press Co. v. Deering, 254 U.S. 443, and Bedford Cut Stone Co. v. Journeymen Stone Cutters' Assn., 274 U.S. 37, held that 20 immunized only trade union activities directed against an employer by his own employees. In Duplex, the union carried on an elaborate scheme to coerce and restrain neutral customers of the complainant manufacturer from dealing with it, with the object of using these customers as an economic lever to bring the nonunion manufacturer to terms. The Court there stated: " The substance of the matters here complained of is an interference with complainant's interstate trade, intended to have coercive effect upon complainant, and produced by what is commonly known as a `secondary boycott,' that is, a combination not merely to refrain from dealing with complainant, or to advise or by peaceful means persuade complainant's customers to refrain (`primary boycott'), but to exercise coercive pressure upon such customers, actual or prospective, in order to cause them [Page 386 U.S. 612, 622] to withhold or withdraw patronage from complainant through fear of loss or damage to themselves should they deal with it." Duplex Printing Press Co. v. Deering, supra, at 466. Thus " primary" but not " secondary" pressures were excepted from the antitrust laws. Truax v. Corrigan, 257 U.S. 312, 330, defined " secondary boycott" as one " where many combine to injure one in his business by coercing third persons against their will to cease patronizing him by threats of similar injury. . . . The question in such cases is whether the moral coercion exercised over a stranger to the original controversy by steps in themselves legal becomes a legal wrong." See 1 Teller, Labor Disputes and Collective Bargaining 145 (1940).[Footnote 7] Commentators of the day, while noting the ambiguity which lurked in the definition, discerned its core concept: union pressure directed at a neutral employer the object of which was to induce or coerce him to cease doing business with an employer with whom the union was engaged in a labor dispute.[Footnote 8] In 1932 Congress enacted the Norris-LaGuardia Act and tipped the scales the other way. Its provisions " established that the allowable area of union activity was not to be restricted, as it had been in the Duplex case, to an immediate employer-employee relation." United [Page 386 U.S. 612, 623] States v. Hutcheson, 312 U.S. 219, 231.[Footnote 9] Congress abolished, for purposes of labor immunity, the distinction between primary activity between the " immediate disputants" and secondary activity in which the employer disputants and the members of the union do not stand " in the proximate relation of employer and employee . . . ." H. R. Rep. No. 669, 72d Cong., 1st Sess., 8 (1932). Thus, in Hutcheson, supra, the Court held that the Norris-LaGuardia Act immunized a jurisdictional strike trapping a neutral employer in the middle of an " internecine struggle between two unions seeking the favor of the same employer," supra, at 232. Commentators of the post-Norris-LaGuardia era, as those before, while continuing to deplore the chameleon-like qualities of the term " secondary boycott," agreed upon its central aspect: pressure tactically directed toward a neutral employer in a labor dispute not his own.[Footnote 10] Labor abuses of the broad immunity granted by the Norris-LaGuardia Act resulted in the Taft-Hartley Act prohibitions against secondary activities enacted in 8 (b) (4) (A), which, as amended in 1959, is now 8 (b) (4) (B). As will appear, the basic thrust of the [Page 386 U.S. 612, 624] accommodation there effected by Congress was not expanded by the Landrum-Griffin amendments. The congressional design in enacting 8 (b) (4) (A) is therefore crucial to the determination of the scope of 8 (e) and 8 (b) (4) (B). Senator Taft said of its purpose: " This provision makes it unlawful to resort to a secondary boycott to injure the business of a third person who is wholly unconcerned in the disagreement between an employer and his employees. . . . [U]nder the provisions of the Norris-LaGuardia Act, it became impossible to stop a secondary boycott or any other kind of a strike, no matter how unlawful it may have been at common law. All this provision of the bill does is to reverse the effect of the law as to secondary boycotts." [Footnote 11] (Emphasis supplied.) Senator Taft and others frequently sounded this note that 8 (b) (4) (A) was designed to eliminate the " secondary boycott," [Footnote 12] and its proponents uniformly cited examples of union conduct which evidenced labor efforts to draw in neutral employers through pressure calculated to induce them to cease doing business with the primary employer.[Footnote 13] And the Senate Committee Report carefully [Page 386 U.S. 612, 625] characterized the conduct prohibited by 8 (b) (4) (A) in the same terms:" Thus, it would not be lawful for a union to engage in a strike against employer A for the purpose of forcing that employer to cease doing business with employer B; nor would it be lawful for a union to boycott employer A because employer A uses or otherwise deals in the goods of or does business with employer B (with whom the union has a dispute)." S. Rep. No. 105, 80th Cong., 1st Sess., 22, I 1947 Leg. Hist. 428.[Footnote 14] The other subsections of 8 (b) (4) of the Act were similarly limited to protecting employers in the position of neutrals between contending parties. The prohibition of subsection (B) against a noncertified union's forcing recognition from an employer was designed to protect the employer trapped between the union and his employees, a majority of whom may not desire to choose the union as their representative. The prohibition of subsection (C) against a demand for recognition when another union has been certified protects the employer trapped between the noncertified and the certified unions. The prohibition of subsection (D) against coercion to force an employer to assign certain work to one of two unions contesting for it protects the employer trapped between the two claims. The central theme pervading these provisions of protection for the neutral employer confirms the assurances of those sponsoring the section that in subsection (A) Congress likewise meant to protect the [Page 386 U.S. 612, 626] employer only from union pressures designed to involve him in disputes not his own.[Footnote 15] Judicial decisions interpreting the broad language of 8 (b) (4) (A) of the Act uniformly limited its application to such " secondary" situations.[Footnote 16] This limitation was in " conformity with the dual congressional objectives of preserving the right of labor organizations to bring pressure to bear on offending employers in primary labor disputes and of shielding unoffending employers and [Page 386 U.S. 612, 627] others from pressures in controversies not their own." Labor Board v. Denver Bldg. Trades Council, 341 U.S. 675, 692. This Court accordingly refused to read 8 (b) (4) (A) to ban traditional primary strikes and picketing having an impact on neutral employers even though the activity fell within its sweeping terms. Labor Board v. International Rice Milling Co., ; see Local 761, Electrical Workers v. Labor Board, 366 U.S. 667. Thus, however severe the impact of primary activity on neutral employers, it was not thereby transformed into activity with a secondary objective. The literal terms of 8 (b)(4)(A) also were not applied in the so-called " ally doctrine" cases, in which the union's pressure was aimed toward employers performing the work of the primary employer's striking employees. The rationale, again, was the inapplicability of the provision's central theme, the protection of neutrals against secondary pressure, where the secondary employer against whom the union's pressure is directed has entangled himself in the vortex of the primary dispute. " [T]he union was not extending its activity to a front remote from the immediate dispute but to one intimately and indeed inextricably united to it." Douds v. Metropolitan Federation of Architects, 75 F. Supp. 672, 677 (D.C. S. D. N. Y. 1948); see Labor Board v. Business Machine & Office Appliance Mechanics, 228 F.2d 553 (C. A. 2d Cir. 1955). We summarized our reading of 8 (b) (4) (A) just a year before enactment of 8 (e): " It aimed to restrict the area of industrial conflict insofar as this could be achieved by prohibiting the most obvious, widespread, and, as Congress evidently judged, dangerous practice of unions to widen that conflict: the coercion of neutral employers, themselves not concerned with a primary labor dispute, through the inducement of their employees to engage [Page 386 U.S. 612, 628] in strikes or concerted refusals to handle goods." Local 1976, United Brotherhood of Carpenters v. Labor Board (Sand Door), 357 U.S. 93, 100. Despite this virtually overwhelming support for the limited reading of 8 (b) (4) (A), the Woodwork Manufacturers Association relies on Allen Bradley Co. v. Local Union No. 3, , as requiring that the successor section, 8 (b) (4) (B), be read as proscribing the District Council's conduct in enforcing the " will not handle" sentence of Rule 17 against Frouge. The Association points to the references to Allen Bradley in the legislative debates leading to the enactment of the predecessor 8 (b) (4) (A). We think that this is an erroneous reading of the legislative history. Allen Bradley held violative of the antitrust laws a combination between Local 3 of the International Brotherhood of Electrical Workers and both electrical contractors and manufacturers of electrical fixtures in New York City to restrain the bringing in of such equipment from outside the city. The contractors obligated themselves to confine their purchases to local manufacturers, who in turn obligated themselves to confine their New York City sales to contractors employing members of the local, and this scheme was supported by threat of boycott by the contractors' employees. While recognizing that the union might have had an immunity for its contribution to the trade boycott had it acted alone, citing Hutcheson, supra, the Court held immunity was not intended by the Clayton or Norris-LaGuardia Acts in cases in which the union's activity was part of a larger conspiracy to abet contractors and manufacturers to create a monopoly. The argument that the references to Allen Bradley in the debates over 8 (b) (4) (A) have broader significance in the determination of the reach of that section is that there was no intent on Local 3's part to influence the internal labor policies of the boycotted out-of-state [Page 386 U.S. 612, 629] manufacturers of electrical equipment. There are three answers to this argument: First, the boycott of out-of-state electrical equipment by the electrical contractors' employees was not in pursuance of any objective relating to pressuring their employers in the matter of their wages, hours, and working conditions; there was no work preservation or other primary objective related to the union employees' relations with their contractor employers. On the contrary, the object of the boycott was to secure benefits for the New York City electrical manufacturers and their employees. " This is a secondary object because the cessation of business was being used tactically, with an eye to its effect on conditions elsewhere." [Footnote 17] Second, and of even greater significance on the question of the inferences to be drawn from the references to Allen Bradley, Senator Taft regarded the Local 3 boycott as in effect saying, " We will not permit any material made by any other union or by any non-union workers to come into New York City and be put into any building in New York City." 93 Cong. Rec. 4199, II 1947 Leg. Hist. 1107. This clearly shows that the Senator viewed the pressures applied by Local 3 on the employers of its members as having solely a secondary objective. The Senate Committee Report echoes the same view:" [It is] an unfair labor practice for a union to engage in the type of secondary boycott that has [Page 386 U.S. 612, 630] been conducted in New York City by local No. 3 of the IBEW, whereby electricians have refused to install electrical products of manufacturers employing electricians who are members of some labor organization other than local No. 3." S. Rep. No. 105, 80th Cong., 1st Sess., 22, I 1947 Leg. Hist. 428. (Emphasis supplied.) Other statements on the floor of Congress repeat the same refrain.[Footnote 18] Third, even on the premise that Congress meant to prohibit boycotts such as that in Allen Bradley without regard to whether they were carried on to affect labor conditions elsewhere, the fact is that the boycott in Allen Bradley was carried on, not as a shield to preserve the jobs of Local 3 members, traditionally a primary labor activity, but as a sword, to reach out and monopolize all the manufacturing job tasks for Local 3 members. It is arguable that Congress may have viewed the use of the boycott as a sword as different from labor's traditional concerns with wages, hours, and working conditions. But the boycott in the present cases was not used as a sword; it was a shield carried solely to preserve the members' jobs. We therefore have no occasion today to decide the questions which might arise where the workers carry on a boycott to reach out to monopolize jobs or acquire [Page 386 U.S. 612, 631] new job tasks when their own jobs are not threatened by the boycotted product.[Footnote 19] It is true that the House bill proposed to amend the Clayton Act to narrow labor's immunity from the antitrust laws. H. R. 3020, 301 (b), I 1947 Leg. Hist. 220. This was omitted from the Conference agreement. It is suggested that this history evidences that Congress meant 8 (b) (4) (A) to reach all product boycotts with work preservation motives. The argument is premised on a statement by the House Managers in the House Conference Report that " [s]ince the matters dealt with in this section have to a large measure been effectuated through the use of boycotts, and since the conference agreement contains effective provisions directly dealing with boycotts themselves, this provision is omitted from the conference agreement." H. R. Conf. Rep. No. 510, 80th Cong., 1st Sess., 65, I 1947 Leg. Hist. 569. The statement is hardly probative that 8 (b) (4) (A) enacted a broad prohibition in face of the overwhelming evidence that its Senate sponsors intended the narrower reach. Actually the statement at best reflects that the House may have receded from a broader position and accepted that of the Senate. For 8 (b) (4) (A) constituted the " effective provisions" referred to and the House Managers' understanding of and agreement with the reach of the section as intended by its Senate sponsors is expressed at page 43 of the same Report, I 1947 Leg. Hist. 547: " Under clause (A) strikes or boycotts, or attempts to induce or encourage such action, were made unfair labor practices if the purpose was to force an employer or other person to cease using, selling, [Page 386 U.S. 612, 632] handling, transporting, or otherwise dealing in the products of another, or to cease doing business with any other person. Thus it was made an unfair labor practice for a union to engage in a strike against employer A for the purpose of forcing that employer to cease doing business with employer B. Similarly it would not be lawful for a union to boycott employer A because employer A uses or otherwise deals in the goods of, or does business with, employer B." In effect Congress, in enacting 8 (b) (4) (A) of the Act, returned to the regime of Duplex Printing Press Co. and Bedford Cut Stone Co., supra, and barred as a secondary boycott union activity directed against a neutral employer, including the immediate employer when in fact the activity directed against him was carried on for its effect elsewhere. Indeed, Congress in rewriting 8 (b) (4) (A) as 8 (b) (4) (B) took pains to confirm the limited application of the section to such " secondary" conduct. The word " concerted" in former 8 (b) (4) was deleted to reach secondary conduct directed to only one individual. This was in response to the Court's holding in Labor Board v. International Rice Milling Co., 341 U.S. 665, that " concerted" required proof of inducement of two or more employees. But to make clear that the deletion was not to be read as supporting a construction of the statute as prohibiting the incidental effects of traditional primary activity, Congress added the proviso that nothing in the amended section " shall be construed to make unlawful, where not otherwise unlawful, any primary strike or primary picketing." [Footnote 20] Many statements [Page 386 U.S. 612, 633] and examples proffered in the 1959 debates confirm this congressional acceptance of the distinction between primary and secondary activity.[Footnote 21] II. The Landrum-Griffin Act amendments in 1959 were adopted only to close various loopholes in the application of 8 (b) (4) (A) which had been exposed in Board and court decisions. We discussed some of these loopholes, and the particular amendments adopted to close them, in Labor Board v. Servette, Inc., 377 U.S. 46, 51-54. We need not repeat that discussion here, except to emphasize, as we there said, that " these changes did not expand the type of conduct which 8 (b) (4) (A) condemned, [Page 386 U.S. 612, 634] that is, union pressures calculated to induce the employees of a secondary employer to withhold their services in order to force their employer to cease dealing with the primary employer." Id., at 52-53. Section 8 (e) simply closed still another loophole.[Footnote 22] in Local 1976, United Brotherhood of Carpenters v. Labor Board (Sand Door), , the Court held that it was no defense to an unfair labor practice charge under 8 (b) (4) (A) that the struck employer had agreed, in a contract with the union, not to handle nonunion material. However, the Court emphasized that the mere execution of such a contract provision (known as a " hot cargo" clause because of its prevalence in Teamsters Union contracts), or its voluntary observance by the employer, was not unlawful under 8 (b) (4) (A). Section 8 (e) was designed to plug this gap in the legislation by making the " hot cargo" clause itself unlawful. The Sand Door decision was believed by Congress not only to create the possibility of damage actions against employers for breaches of " hot cargo" clauses, but also to create a situation in which such clauses might be employed to exert subtle pressures upon employers to engage in " voluntary" boycotts.[Footnote 23] Hearings in late 1958 before the Senate Select Committee explored seven cases of " hot cargo" clauses in Teamsters Union contracts, the use of which the Committee found conscripted neutral employers in Teamsters organizational campaigns.[Footnote 24] [Page 386 U.S. 612, 635] This loophole-closing measure likewise did not expand the type of conduct which 8 (b) (4) (A) condemned. Although the language of 8 (e) is sweeping, it closely tracks that of 8 (b) (4) (A), and just as the latter and its successor 8 (b) (4) (B) did not reach employees' activity to pressure their employer to preserve for themselves work traditionally done by them, 8 (e) does not prohibit agreements made and maintained for that purpose. The legislative history of 8 (e) confirms this conclusion. The Kennedy-Ervin bill as originally reported proposed no remedy for abuses of the " hot cargo" clauses revealed at the hearings of the Select Committee. Senators Goldwater and Dirksen filed a minority report urging that a prohibition against " hot cargo" clauses should be enacted to close that loophole. Their statement expressly acknowledged their acceptance of the reading of 8 (b) (4) (A) as applicable only " to protect genuinely neutral employers and their employees, not themselves involved in a labor dispute, against economic coercion designed to give a labor union victory in a dispute with some other employer." [Footnote 25] They argued that a prohibition [Page 386 U.S. 612, 636] against " hot cargo" clauses was necessary to further that objective. They were joined by Senator McClellan, Chairman of the Select Committee, in their proposal to add such a provision. Their statements in support consistently defined the evil to be prevented in terms of agreements which obligated neutral employers not to do business with other employers involved in labor disputes with the union.[Footnote 26] Senator Gore initially proposed, and the Senate first passed, a " hot cargo" amendment to the Kennedy-Ervin bill which outlawed such agreements only for " common carriers subject to Part II of the Interstate Commerce Act." This reflected the testimony at the Select Committee hearings which attributed abuses of such clauses primarily to the Teamsters Union. Significantly, such alleged abuses by the Teamsters invariably involved uses of the clause to pressure neutral trucking employers not to handle goods of other employers involved in disputes with the Teamsters Union.[Footnote 27] [Page 386 U.S. 612, 637] The House Labor Committee first reported out a bill containing a provision substantially identical to the Gore amendment.[Footnote 28] The House Report expressly noted that since that proposal tracked the language of 8 (b) (4) (A) " it preserved the established distinction between primary activities and secondary boycotts." [Footnote 29] The substitute Landrum-Griffin bill, however, expanded the proposal to cover all industry and not common carriers alone. H. R. 8400, 705 (b) (1) in I 1959 Leg. Hist. 683. Representative Landrum stated, " I submit if such contracts are bad in one segment of our economy, they are undesirable in all segments." 105 Cong. Rec. 14343, II 1959 Leg. Hist. 1518. In describing the substitute bill, Representative Landrum pointedly spoke of the situation " where the union, in a dispute with one employer, puts pressure upon another employer or his employees, in order to force the second employer or his employees, to stop doing business with the first employer, and `bend his knee to the union's will.'" Ibid. An analysis of the substitute bill submitted by Representative Griffin referred to the need to plug the various loopholes in the " secondary boycott" provisions, one of which is the " hot cargo" agreement.[Footnote 30] In Conference Committee, the Landrum-Griffin application to all industry, and not just to common carriers, was adopted. However, provisos were added to 8 (e) to preserve the status quo in the construction industry, and exempt the garment industry from the prohibitions of 8 (e) [Page 386 U.S. 612, 638] and 8 (b) (4) (B). This action of the Congress is strong confirmation that Congress meant that both 8 (e) and 8 (b) (4) (B) reach only secondary pressures. If the body of 8 (e) applies only to secondary activity, the garment industry proviso is a justifiable exception which allows what the legislative history shows it was designed to allow, secondary pressures to counteract the effects of sweatshop conditions in an industry with a highly integrated process of production between jobbers, manufacturers, contractors and subcontractors.[Footnote 31] First, this motivation for the proviso sheds light on the central theme of the body of 8 (e), to which the proviso is an exception. Second, if the body of that provision and 8 (b) (4) (B) were construed to prohibit primary agreements and their maintenance, such as those concerning work preservation, the proviso would have the highly unlikely effect, unjustified in any of the statute's history, of permitting garment workers, but garment workers only, to preserve their jobs against subcontracting or prefabrication by such agreements and by strikes and boycotts to enforce them. Similarly, the construction industry proviso, which permits " hot cargo" agreements only for jobsite work, would have the curious and unsupported result of allowing the construction worker to make agreements preserving his traditional tasks against jobsite prefabrication and subcontracting, but not against nonjobsite prefabrication and subcontracting. On the other hand, if the heart of 8 (e) is construed to be directed only to secondary activities, the construction proviso becomes, as it was intended to be, a measure designed to allow agreements pertaining to certain secondary activities on the construction site because [Page 386 U.S. 612, 639] of the close community of interests there,[Footnote 32] but to ban secondary-objective agreements concerning nonjobsite work, in which respect the construction industry is no different from any other. The provisos are therefore substantial probative support that primary work preservation agreements were not to be within the ban of 8 (e).[Footnote 33] The only mention of a broader reach for 8 (e) appears in isolated statements by opponents of that provision, expressing fears that work preservation agreements would be banned.[Footnote 34] These statements have scant probative value against the backdrop of the strong evidence to the contrary. Too, " we have often cautioned against the danger, when interpreting a statute, of reliance upon the views of its legislative opponents. In their zeal to defeat a bill, they understandably tend to [Page 386 U.S. 612, 640] overstate its reach." Labor Board v. Fruit & Vegetable Packers, 377 U.S. 58, 66. " It is the sponsors that we look to when the meaning of the statutory words is in doubt." Schwegmann Bros. v. Calvert Distillers Corp., 341 U.S. 384, 394-395. See Mastro Plastics Corp. v. Labor Board, 350 U.S. 270, 288. In addition to all else, " [t]he silence of the sponsors of [the] amendments is pregnant with significance. . . ." Labor Board v. Fruit & Vegetable Packers, supra, at 66. Before we may say that Congress meant to strike from workers' hands the economic weapons traditionally used against their employers' efforts to abolish their jobs, that meaning should plainly appear. " [I]n this era of automation and onrushing technological change, no problems in the domestic economy are of greater concern than those involving job security and employment stability. Because of the potentially cruel impact upon the lives and fortunes of the working men and women of the Nation, these problems have understandably engaged the solicitous attention of government, of responsible private business, and particularly of organized labor." Fibreboard Paper Prods. Corp. v. Labor Board, . 225 (concurring opinion of STEWART, J.). We would expect that legislation curtailing the ability of management and labor voluntarily to negotiate for solutions to these significant and difficult problems would be preceded by extensive congressional study and debate, and consideration of voluminous economic, scientific, and statistical data. The silence regarding such matters in the Eighty-sixth Congress is itself evidence that Congress, in enacting 8 (e), had no thought of prohibiting agreements directed to work preservation.[Footnote 35] In fact, since the [Page 386 U.S. 612, 641] enactment of 8 (e), the Subcommittee on Employment and Manpower of the Senate Committee on Labor and Public Welfare, and the Subcommittee on Unemployment and the Impact of Automation and the Select Subcommittee on Labor of the House Committee on Education and Labor have been extensively studying the threats to workers posed by increased technology and automation,[Footnote 36] and some legislation directed to the problem [Page 386 U.S. 612, 642] has been passed.[Footnote 37] We cannot lightly impute to Congress an intent in 8 (e) to preclude labor-management agreements to ease these effects through collective bargaining on this most vital problem created by advanced technology. Moreover, our decision in Fibreboard Paper Prods. Corp., supra, implicitly recognizes the legitimacy of work preservation clauses like that involved here. Indeed, in the circumstances presented in Fibreboard, we held that bargaining on the subject was made mandatory by 8 (a) (5) of the Act, concerning as it does " terms and conditions of employment," 8 (d). Fibreboard involved an alleged refusal to bargain with respect to the contracting-out of plant maintenance work previously performed by employees in the bargaining unit. The Court recognized that the " termination of employment which . . . necessarily results from the contracting out of work performed by members of the established bargaining unit," supra, at 210, is " a problem of vital concern to labor and management . . .," supra, at 211. We further noted, supra, at 211-212:" Industrial experience is not only reflective of the interests of labor and management in the subject matter but is also indicative of the amenability of such subjects to the collective bargaining process. [Page 386 U.S. 612, 643] Experience illustrates that contracting out in one form or another has been brought, widely and successfully, within the collective bargaining framework. Provisions relating to contracting out exist in numerous collective bargaining agreements, and `[c]ontracting out work is the basis of many grievances; and that type of claim is grist in the mills of the arbitrators.' United Steelworkers v. Warrior & Gulf Nav. Co., 363 U.S. 574, 584." See Local 24, Teamsters Union v. Oliver, 358 U.S. 283, 294. It would therefore be incongruous to interpret 8 (e) to invalidate clauses over which the parties may be mandated to bargain and which have been successfully incorporated through collective bargaining in many of this Nation's major labor agreements. Finally, important parts of the historic accommodation by Congress of the powers of labor and management are 7 and 13 of the National Labor Relations Act, passed as part of the Wagner Act in 1935 and amended in 1947. The former section assures to labor " the right . . . to bargain collectively through representatives of their own choosing, and to engage in other concerted activities for the purpose of collective bargaining or other mutual aid or protection . . . ." Section 13 preserves the right to strike of which the boycott is a form, except as specifically provided in the Act. In the absence of clear indicia of congressional intent to the contrary, these provisions caution against reading statutory prohibitions as embracing employee activities to pressure their own employers into improving the employees' wages, hours, and working conditions. See Labor Board v. Drivers Local Union, ; Labor Board v. International Rice Milling Co., 341 U.S. 665, 672-673; Labor Board v. Denver Bldg. Trades Council, 341 U.S. 675, 687; Mastro Plastics Corp. v. Labor Board, supra, at 284, 287. [Page 386 U.S. 612, 644] The Woodwork Manufacturers Association and amici who support its position advance several reasons, grounded in economic and technological factors. Why " will not handle" clauses should be invalid in all circumstances. Those arguments are addressed to the wrong branch of government. It may be " that the time has come for a re-evaluation of the basic content of collective bargaining as contemplated by the federal legislation. But that is for Congress. Congress has demonstrated its capacity to adjust the Nation's labor legislation to what, in its legislative judgment, constitutes the statutory pattern appropriate to the developing state of labor relations in the country. Major revisions of the basic statute were enacted in 1947 and 1959. To be sure, then, Congress might be of opinion that greater stress should be put on . . . eliminating more and more economic weapons from the . . . [Union's] grasp . . . . But Congress' policy has not yet moved to this point . . . ." Labor Board v. Insurance Agents' International Union, 361 U.S. 477, 500. III The determination whether the " will not handle" sentence of Rule 17 and its enforcement violated 8 (e) and 8 (b) (4) (B) cannot be made without an inquiry into whether, under all the surrounding circumstances,[Footnote 38] the Union's objective was preservation of work for Frouge's employees, or whether the agreements and boycott were tactically calculated to satisfy union objectives elsewhere. Were the latter the case, Frouge, the boycotting employer, would be a neutral bystander, and the [Page 386 U.S. 612, 645] agreement or boycott would, within the intent of Congress, become secondary. There need not be an actual dispute with the boycotted employer, here the door manufacturer, for the activity to fall within this category, so long as the tactical object of the agreement and its maintenance is that employer, or benefits to other than the boycotting employees or other employees of the primary employer thus making the agreement or boycott secondary in its aim.[Footnote 39] The touchstone is whether the agreement or its maintenance is addressed to the labor relations of the contracting employer vis-a-vis his own employees.[Footnote 40] This will not always be a simple test to apply.[Footnote 41] But " [h]owever difficult the drawing of lines more nice than obvious, the statute compels the task." Local 761, Electrical Workers v. Labor Board, 366 U.S. 667, 674. That the " will not handle" provision was not an unfair labor practice in these cases is clear. The finding of the [Page 386 U.S. 612, 646] Trial Examiner, adopted by the Board, was that the objective of the sentence was preservation of work traditionally performed by the jobsite carpenters. This finding is supported by substantial evidence, and therefore the Union's making of the " will not handle" agreement was not a violation of 8 (e). Similarly, the Union's maintenance of the provision was not a violation of 8 (b) (4) (B). The Union refused to hang prefabricated doors whether or not they bore a union label, and even refused to install prefabricated doors manufactured off the jobsite by members of the Union. This and other substantial evidence supported the finding that the conduct of the Union on the Frouge jobsite related solely to preservation of the traditional tasks of the jobsite carpenters. The judgment is affirmed in No. 110, and reversed in No. 111. It is so ordered. APPENDIX TO OPINION OF THE COURT. The relevant provisions of the National Labor Relations Act, as amended (61 Stat. 141, 73 Stat. 542, 29 U.S.C. 158), are as follows: 8 (b) It shall be an unfair labor practice for a labor organization or its agents -. . . . . (4) (i) to engage in, or to induce or encourage any individual employed by any person engaged in commerce or in an industry affecting commerce to engage in, a strike or a refusal in the course of his employment to use, manufacture, process, transport, or otherwise handle or work on any goods, articles, materials, or commodities or to perform any services; or (ii) to threaten, coerce, or restrain any person engaged in commerce or [Page 386 U.S. 612, 647] in an industry affecting commerce, where in either case an object thereof is - (A) forcing or requiring any employer or self-employed person . . . to enter into any agreement which is prohibited by section 8 (e); (B) forcing or requiring any person to cease using, selling, handling, transporting, or otherwise dealing in the products of any other producer, processor, or manufacturer, or to cease doing business with any other person . . . . Provided, That nothing contained in this clause (B) shall be construed to make unlawful, where not otherwise unlawful, any primary strike or primary picketing;. . . . . (e) It shall be an unfair labor practice for any labor organization and any employer to enter into any contract or agreement, express or implied, whereby such employer ceases or refrains or agrees to cease or refrain from handling, using, selling, transporting or otherwise dealing in any of the products of any other employer, or to cease doing business with any other person, and any contract or agreement entered into heretofore or hereafter containing such an agreement shall be to such extent unenforcible and void: Provided, That nothing in this subsection (e) shall apply to an agreement between a labor organization and an employer in the construction industry relating to the contracting or subcontracting of work to be done at the site of the construction, alteration, painting, or repair of a building, structure, or other work: Provided further, That for the purposes of this subsection (e) and section 8 (b) (4) (B) the terms " any employer," " any person engaged in commerce or an industry affecting commerce," and " any person" when used in relation to the terms " any other producer, processor, or manufacturer," " any other employer," [Page 386 U.S. 612, 648] or " any other person" shall not include persons in the relation of a jobber, manufacturer, contractor, or subcontractor working on the goods or premises of the jobber or manufacturer or performing parts of an integrated process of production in the apparel and clothing industry: Provided further, That nothing in this Act shall prohibit the enforcement of any agreement which is within the foregoing exception. Footnote 1 The text of these sections appears in the Appendix. Footnote 2 The full text of Rule 17 is as follows: " No employee shall work on any job on which cabinet work, fixtures, millwork, sash, doors, trim or other detailed millwork is used unless the same is Union-made and bears the Union Label of the United Brotherhood of Carpenters and Joiners of America. No member of this District Council will handle material coming from a mill where cutting out and fitting has been done for butts, locks, letter plates, or hardware of any description, nor any doors or transoms which have been fitted prior to being furnished on job, including base, chair, rail, picture moulding, which has been previously fitted. This section to exempt partition work furnished in sections." The National Labor Relations Board determined that the first sentence violated 8 (e), 149 N. L. R. B. 646, 655-656, and the Union did not seek judicial review of that determination. Footnote 3 There were also charges of violation of 8 (e) and 8 (b) (4) (B) arising from the enforcement of the Rule 17 provision against three other contractors whose contracts with the owners of the construction projects involved specified that the contractors should furnish and install precut and prefinished doors. The Union refused to permit its members to hang these doors. The Board held that this [Page 386 U.S. 612, 617] refusal violated 8 (b) (4) (B). The Board reasoned that, since these contractors (in contrast to Frouge) did not have " control" over the work that the Union sought to preserve for its members, the Union's objective was secondary - to compel the project owners to stop specifying precut doors in their contracts with the employer-contractors. 149 N. L. R. B., at 658. The Union petitioned the Court of Appeals to set aside the remedial order issued by the Board on this finding, but the court sustained the Board. 354 F.2d 594, 597. The Union did not seek review of the question here. Not before us, therefore, is the issue argued by the AFL-CIO in its brief amicus curiae, namely, whether the Board's " right-to-control doctrine - that employees can never strike against their own employer about a matter over which he lacks the legal power to grant their demand" - is an incorrect rule of law inconsistent with the Court's decision in Labor Board v. Insurance Agents' International Union. 361 U.S. 477, 497-498. Footnote 4 The statutory language of 8 (e) is far from unambiguous. It prohibits agreements to " cease . . . from handling . . . any of the products of any other employer . . . ." (Emphasis supplied.) Since both the product and its source are mentioned, the provision might be read not to prohibit an agreement relating solely to the nature of the product itself, such as a work-preservation agreement, but only to prohibit one arising from an objection to the other employers or a definable group of employers who are the source of the product, for example, their nonunion status. Footnote 5 Letter of Judge Learned Hand, quoted in Lesnick, The Gravamen of the Secondary Boycott, 62 Col. L. Rev. 1363, 1393-1394, n. 155 (1962). See 2 Sutherland, Statutory Construction 321 (Horack ed. 1943): " Before the true meaning of the statute can be determined consideration must be given to the problem in society to which the legislature addressed itself, prior legislative consideration of the problem, the legislative history of the statute under litigation, and to the operation and administration of the statute prior to litigation." Footnote 6 See Loewe v. Lawlor, , and 235 U.S. 522 (Danbury Hatters' Case). The history of this development under the Sherman Act is traced in Duplex Printing Press Co. v. Deering, 254 U.S. 443; Allen Bradley Co. v. Local Union No. 3, 325 U.S. 797, 800-803. See generally Berman, Labor and the Sherman Act [Page 386 U.S. 612, 621] (1930). Collective activity was also being restrained through the doctrine of " malicious combination." See Duplex Printing Press Co. v. Deering, supra, at 484-485 (Brandeis, J., dissenting): see generally Laidler, Boycotts and the Labor Struggle 189-194 (1914). Footnote 7 Painters District Council v. United States, 284 U.S. 582, which summarily affirmedTry vLex for FREE for 3 days
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