The plaintiff is a corporation engaged in manufacturing, selling, and, to some extent, installing cork board, a material used for insulation against heat and cold, which is placed upon the roofs of buildings and also in interiors of cold storage and refrigerating plants, ice houses and other places used for cold storage. The corporation has a large and valuable business, and is widely well known. It not only sells its product, leaving purchasers to instal at their pleasure, but also itself contracts for the installation and guarantees its work. For the latter purpose it has long maintained a construction crew under a trained engineer, in which the mechanics are union men belonging to the laborers’, the carpenters’ and the plasterers’ labor unions. Except within *268a radius of twenty-five miles about the city of New York it has not employed roofers in its work. This proceeding is an episode in a struggle by the United Slate, Tile and Composition Roofers, Damp and Waterproof Workers’ Association, a voluntary unincorporated labor union, which with its members will be referred to.as the "roofers,” to obtain as part of its "jurisdiction” all work in installing, applying, setting and distributing cork material when installed in hot asphalt or other similar plastic material.
The bill was filed on March 14, 1930.' The defendants are the president, vice-president, secretary-treasurer, recording secretary and the business agents of Local Union No. 33 of the United Slate, Tile and Composition Roofers, Damp and Waterproof Workers’ Association, who are named individually, and "the other officers and members” of the association and of Local Union No. 33 who are numerous, mostly unknown to the plaintiff, but are alleged to be “fairly represented by said officers and have a common interest with them in the suit.” They are referred to as “the roofers.” The bill seeks injunctive relief. Answer was filed by the defendants. After hearings by a master and a report to which no exceptions were filed or taken by either party, the cause was heard by a judge of the Superior Court who reserved the case for the determination of the full court upon the pleadings, a stipulation of the parties with regard to conduct pending the proceedings, the order of reference, the master’s report, the decree confirming the report, the plaintiff’s motion for entry of a final decree and all questions of law, such decree to be entered, or order made, as justice and equity may require.
The master reports the following facts: For ordinary roof covering slabs of the cork board are dipped in hot asphalt and laid in place with little occasion for cutting and trimming them. For ceilings and walls of rooms, and for cold storage and refrigeration construction, much accurate cutting, trimming and fitting are called for, and the board is laid in a better grade of asphalt or in Portland cement mortar. Although hot pitch or tar is used to some extent in interior work, it is never used for installing the board in cold storage *269and refrigeration work. The work is performed by carpenters where asphalt or a similar substance is used, and. by plasterers if the board is laid in cement. Except within a radius of twenty-five miles of the city hall of New York city where certain men among the roofers have had special training, no roofers have been employed. In a few instances the plaintiff has employed roofers elsewhere, but with unsatisfactory results. Roofers do not customarily carry the tools nor possess the skill adequately to perform the work essential to satisfactory installation; but they could acquire tools and skill for the part of the work which they claim within a short period!
As early as 1928 the roofers claimed the work of laying cork board in hot asphalt wherever used. The work on a few jobs was given them, but was not satisfactory to the plaintiff. In January of 1930 the roofers’ union made formal demand for the work and for an agreement. The plaintiff refused to make the desired agreement and was notified “that whenever said work was to be laid in hot asphalt, and other mechanics were employed to do said work, that the other mechanics be discharged and that the defendants be hired in their stead, and that if said demands were not acquiesced in by the plaintiff or other contractors, then in that event they, the roofers, would refuse to work upon any building for any contractor or subcontractor where the material of the plaintiff was being installed by any mechanics other than the roofers.” Pursuant to instructions from the International Roofers Union to Local Union No. 33 to endeavor to obtain all the work of installing and applying the cork board material demanded of the plaintiff, that locpl voted on February 10,1930, to refuse “to handle any product of the Armstrong Cork Company until they come to a signed agreement with our Local”; and it, forthwith, notified the Building Trades Employers Association of its refusal. Conferences on March 5 and March 7 were held without reaching an agreement. At the latter conference, the representative of Local No. 33 claimed for the roofers “ All heating of asphaltic material, all brush work, spray gun system, all mopping, all setting of cork on roofs, on floors, dipping of all *270cork and heating of same, and the right to determine the number of men used on each operation.” A representative of the carpenters claimed "The setting of all cork in cold storage insulations, whether on roofs, walls, ceilings or floors, except where the cork is set in Portland cement”; and a representative of the plasterers claimed "The work of setting all of the cork in Portland cement.” On March 10, 1930, Local No. 33 voted to stand by the action taken on February 10. Copies of the votes were sent to the Building Trades Employers Association so that members should govern themselves accordingly in making contracts for cork board insulation.
The master found that "It is the defendants’ plan to obtain a monopoly of all of the work of installing and applying cork board material manufactured by the plaintiff and others engaged in a similar line of business, to the exclusion of all other crafts, wherever said material is set upon a hot asphalt base, regardless of whether it is upon the roof or the interior of a building and without regard to the character of the building upon or in which it is to be installed. The defendants further propose to refuse to handle any of the material of the plaintiff or to refuse to work upon any building for any contractor, subcontractor or owner, where the plaintiff is engaged in the installation and application of.its said material with its own mechanics. The defendants also propose, and already have advised contractors, builders and owners generally that there will be labor difficulties upon their work if the plaintiff’s material is used or if a contract is made with the plaintiff whereby it undertakes to furnish and erect its material, hoping thereby to induce contractors, builders and owners generally to bring pressure to bear upon the plaintiff to comply with the defendants’ demands, lest its business be ruined if it neglects and refuses to do so.”
In carrying out this plan certain of the defendants in the employ of the Columbia Cornice Company refused to handle material purchased of the plaintiff by, and about to be installed by, the former company on a job of the ThompsonStarrett Company, Inc., at 75 Federal Street, Boston,' although none of the plaintiff’s employees were, or were to be, *271employed upon the work. On March 13,1930, the defendant Keefe with knowledge and approval of the other defendants and in the course of his duties as business agent ordered defendants then employed by the Eagle Cornice and Skylight Works, to strike on a roofing job of that company as subcontractor for roofing under a general contractor for a building for the Jordan Marsh Company at Cambridge, where the roofers had no cause of complaint against the Eagle company, but where the plaintiff was doing with its own men an installation of its cork board in the interior of the building. About February 1,1930, the defendant Keefe, having learned that the plaintiff’s product was to be used in a refrigerating plant at Cambridge and that the Eagle company had the roofing contract, advised the president of the company that members of the roofers’ union would not be allowed to work on the job until the plaintiff entered into a contract with the Local Union No. 33. As a result of later conferences with the president, however, the roofers were permitted to work. About the same time, the Eagle company, which had a subcontract for the roof on a hospital building at Waltham where the plaintiff’s material was to be used, was notified by defendant Keefe that roofers would not be permitted to handle the plaintiff’s product. As a result of conferences with the general contractor and architect, in order to avoid labor trouble and because of the position of the roofers, the product of another manufacturer was substituted for the plaintiff’s, and the latter lost a contract which otherwise it would have had. Other instances were put in evidence of attempts by the defendants to interfere with the úse and installation of the plaintiff’s product in order to compel the plaintiff to contract with the defendants. The Eagle company’s and the Columbia company’s men engaged on jobs where the plaintiff was not engaged or where its product was not to be used were not called off from those jobs. Nor did defendants, members of Local No. 33, object in March, 1930, to working on a job at Newport, Rhode Island, where the plaintiff’s cork was being installed.
In the circumstances thus disclosed the plaintiff is entitled to injunctive relief. Indeed while not expressly ad*272mitting its right thereto, the defendants’ argument has been directed chiefly to the contention that the relief asked for in the draft decree submitted is too broad. Although the law has recognized a determination by laborers united in a voluntary unincorporated labor union to obtain for themselves all the work of a particular kind, as a legal justification for a strike or the exercise of pressure to compel their employment to the exclusion of others, Pickett v. Walsh, 192 Mass. 572, 583, Hoban v. Dempsey, 217 Mass. 166, Burnham v. Dowd, 217 Mass. 351, 356, Shinsky v. O’Neil, 232 Mass. 99, 102, it refuses to regard as legal certain methods of exerting pressure. These methods equity will restrain. The defendants here have resorted to them. They have no direct relation as employees of the plaintiff, except, perhaps, in the vicinity of the city of New York, where it gives roofers the work which they are demanding to have elsewhere. Except in that vicinity, they cannot resort to the direct strike which would be regarded as legal. Accordingly at Boston and in its vicinity they have seized upon what, in their nature, are sympathetic strikes, boycotts and black listing which are illegal. Reynolds v. Davis, 198. Mass. 294, 300. New England Cement Gun Co. v. McGivern, 218 Mass. 198. Cornellier v. Haverhill Shoe Manufacturers’ Association, 221 Mass. 554. Folsom Engraving Co. v. McNeil, 235 Mass. 269. Moore Drop Forging Co. v. McCarthy, 243 Mass. 554. They have conspired to cause breaches of existing contracts; which was held illegal in Berry v. Donovan, 188 Mass. 353, Beekman v. Marsters, 195 Mass. 205, Aberthaw Construction Co. v. Cameron, 194 Mass. 208, Folsom v. Lewis, 208 Mass. 336, Burnham v. Dowd, 217 Mass. 351, and W. A. Snow Iron Works, Inc. v. Chadwick, 227 Mass. 382. They have taken men away from work then being performed by employers with whom they have no trade dispute because the plaintiff’s product was being used, or was to be used, upon the building where the employer was at work, or where the plaintiff itself was installing its product and doing the work with its own men; which we have held to be illegal in Pickett v. Walsh, 192 Mass. 572, Burnham v. Dowd, 217 Mass. *273351, and A. T. Stearns Lumber Co. v. Howlett, 260 Mass. 45. They have given widespread notice to builders and building contractors that, until the plaintiff enters into the agreement with them which they desire, labor troubles will ensue wherever roofers are employed by others than the plaintiff and the products of the plaintiff are to be or are being installed either by others or by the plaintiff. This, too, is illegal under the principles of Burnham v. Dowd, 217 Mass. 351, New England Cement Gun Co. v. McGivern, 218 Mass. 198, Martineau v. Foley, 231 Mass. 220, and Folsom Engraving Co. v. McNeil, 235 Mass. 269. Their laws authorize, as the master has found, the imposition of fines upon members who refuse to obey the injunctions of the local union, and that union has ordered pressure to be exerted on the plaintiff through the objectional methods. Such imposition may be restrained. A. T. Stearns Lumber Co. v. Howlett, 260 Mass. 45, 71.
The record does not disclose the names of those who were served with process; but answer was made on behalf of “the defendants” and must be assumed to be on behalf of all the defendants. All not served and not named have a common interest in the success of the course pursued, and are fairly represented by those named. The injunction to be effective must apply to all, and justly applies to all, although blame for violating it may vary greatly with the individual at fault. Baush Machine Tool Co. v. Hill, 231 Mass. 30. Martineau v. Foley, 231 Mass. 220, 224.
Equity may properly enjoin certain refusal to work on behalf of individuals. The right of the individual to refuse to work for another on any ground pleasing to himself does not go so far as to tie the hands of the law where individuals are in combination to prevent that other from securing any one to work for him. Refusal in an effort to further the illegal purpose of the combination is properly restrained. A. T. Stearns Lumber Co. v. Howlett, 264 Mass. 511, 515. A refusal to work in truth and fact not connected with or induced by the furtherance of the combination hereby denounced cannot be restrained and is not within the injunction of the decree herein.
*274A decree is not too broad when it enjoins illegal action which at the moment of the filing of the bill the defendants have not taken, if it appears that it is action which is threatened by the defendants in words or is legitimately to be inferred from the action which has been taken by them to be strongly probable to be resorted to by them in the pursuit of their purpose, and is within the charges of the bill. Aberthaw Construction Co. v. Cameron, 194 Mass. 208, 215.
We have not dealt with the question of the creation of a monopoly or with that of interference with interstate commerce because neither seems essential to the decision of the matter now before us. Nor do we consider that the action of the National Board of Jurisdictional Awards, to which neither the plaintiff nor these defendants were parties, is material here.
It follows that the plaintiff is entitled to a decree in the form of the decree submitted.
Ordered accordingly.