A strike having been inaugurated at the plaintiff’s factory on March ,5, 1920, suit is brought against the defendants as the officers, agents and members of the local lodge of the International Association of Machinists, a voluntary organization, asking for injunctive relief from a continuance of the strike and from *541its maintenance by unlawful means. We shall hereafter refer to the defendants who hold the offices and exercise the powers described in the second paragraph of the bill as the union, and to the plaintiff as the company.
It appears from the master’s report, and the single justice could find, that in November or December, 1919, the company for the purpose of preventing machinists from leaving its employment after they had been trained as skilled workmen at considerable expense, and to retain a force of reliable workmen so that it could enter into and perform contracts for the manufacture and delivery of its product with reasonable assurance of success and dispatch, solicited individual machinists as they were hired to sign a contract, a copy of which is annexed to the report. By these contracts, which are referred to in the record as “individual contracts,” the employee to the best of his skill and ability, and in accordance with factory regulations, agreed to work for the company during its regular working hours for one year from the date of employment, at a fixed compensation for each hour worked, or the prevailing piece rate. If at the expiration of the year neither party gave to the other notice in writing of termination, the agreement was to remain in force for the further period of one year.
The company could lawfully contract with machinists who desired to enter its service, and as no law of the land was violated, it could impose as a condition precedent to employment, the terms of the “individual contracts.” Plant v. Woods, 176 Mass. 492, 498, 502. Folsom Engraving Co. v. McNeil, 235 Mass. 269. And this right is not cut down nor abridged, as the single justice could say, by the master’s further finding, “that another motive operating in the minds of officials of the company in desiring to obtain such contracts was that by means thereof the influence of the union would be weakened, and the power of the strike impaired.” The means being legitimate, the company could protect itself from the interruption of its business and consequent damage from the action of discontented employees hired in the mass, and controlled at all times in their contractual relations, by the union of which they were members. W. A. Snow Iron Works, Inc. v. Chadwick, 227 Mass. 382. Coppage v. Kansas, 236 U. S. 1,14. Hitchman Coal & Coke Co. v. Mitchell, 245 U. S. 229. The union also was under no obligation whatever to recognize the *542“individual contracts,” and its members who had not thus obligated themselves could retire at will from the company’s service leaving it to go into the labor market and obtain competent workmen if any could be found. Smith v. Bowen, 232 Mass. 106. Folsom Engraving Co. v. McNeil, 235 Mass. 269.
But the defendants as the master states were not satisfied to take this course, or any other action short of organizing and precipitating a strike which should so cripple the industrial powers of the company as to compel it to abandon its policy of selecting and hiring employees whenever and wherever it pleased. The situation very likely was becoming critical as “The contracts were steadily adopted by considerable numbers of the machinists, until on March 5, 1920, two thousand two hundred and twenty-two employees, of a total of about six thousand, had signed.”
We now take up the action of the union begun shortly after the company had requested signatures to the “individual contracts.” It first protested. It next presented to the company an agreement which provided that none but union men should be employed when available, and shop committees appointed by the union should be recognized by the company as authorized to consider all disputes or grievances arising between members of the union and the company. It would seem almost unnecessary to say that the parties could have mutually agreed to this proposed form of contract. Smith v. Bowen, supra. But the company on February 7 declined, and insisted on its right to continue to make “individual contracts,” and that this form of employment would be followed. The union replied, that it could not agree that its members should sign the “individual contracts,” and it would have to “insist on the practice being discontinued.” During further negotiations the proposed agreement submitted by the union was withdrawn, but the proposition then submitted demanded “the elimination of the individual contracts as it concerns employees of the machine department,” and it would be “absolutely useless to consider this or any other proposition unless we can come to some agreement as to holding in abeyance the making of these (individual) contracts in the meantime,” that is, “for six or seven days while the new proposition was being considered by the company, or until a conference with its board of directors could be arranged.” The company on the same day received a *543letter from the representative of the union which in substance formally withdrew the proposed agreement, and asked that shop committees to represent the workmen be formed by the machinists which should be recognized as their representatives by the company, and that the “individual contracts” should be withdrawn. The union had voted on February 21 to strike, but this action had not been communicated to the company until March 5 when the strike was put in force, which on March 3 had been sanctioned by the grand lodge with which as a subordinate it was affiliated.
It is expressly found that there was no dispute concerning wages, hours of employment, or general conditions of labor. The master reports that the union claimed before him that the strike was called in defence of “collective bargaining,” while the plaintiff as alleged in the bill contended that it was ordered to compel the abandonment of the “individual contracts.” The question whether the strike was lawful does not depend upon the choice of descriptive words. If the company surrendered to the union it must of necessity give up in the future the “ individual contracts ” as applied to employees of the machine department, and the demands even in modified form were not limited to “collective bargaining,” but included an irrevocable abandonment of the “individual contracts.”
The defendant’s answer to all the essential allegations of the bill is nothing more than a general denial, and on the master’s findings with such material inferences of fact as properly could be drawn, the single justice as shown by the decree could determine, that the strike was for the purpose of compelling the company to do away with “individual contracts,” and to recognize the rights of the union as stated by their representative, and, his conclusion not being plainly wrong, should not be reversed. East Tennessee Land Co. v. Leeson, 183 Mass. 37. Kennedy v. Welch, 196 Mass. 592, 594. Folsom v. Lewis, 208 Mass. 336. Folsom Engraving Co. v. McNeil, 235 Mass. 269.
But if notwithstanding the unequivocal and positive statements to the contrary appearing in the circulars it sent out broadcast, the contention of the union that the strike was solely to compel the company to adopt “collective bargaining,” the decree should stand. “Whatever may be the advantages of ‘collective bargaining,’ it is not bargaining at all, in any just sense, unless it is *544voluntary on both sides. The same liberty which enables men to form unions, and through the union to enter into agreements with employers willing to agree, entitles other men'to remain independent of the union and other employers to agree with them to employ no man who owes any allegiance or obligation to the union. In the latter case, as in the former, the parties are entitled to be protected by the law in the enjoyment of the benefits of any lawful agreement they may make.” Hitchman Coal & Coke Co. v. Mitchell, 245 U. S. 229, 250, 251. It has been uniformly held in principle by this court, "that the employer is as free to make non-membership in a union a condition of employment, as the working man is free to join the union, and that this is a part of the constitutional rights of personal liberty and private property, not to be taken away even by legislation, unless through some proper exercise of the paramount police power.” Plant v. Woods, 176 Mass. 492. Berry v. Donovan, 188 Mass. 353. Reynolds v. Davis, 198 Mass. 294. Folsom v. Lewis, 208 Mass. 336. Cornellier v. Haverhill Shoe Manufacturers’ Association, 221 Mass. 554. Baush Machine Tool Co. v. Hill, 231 Mass. 30. W. A. Snow Iron Works, Inc. v. Chadwick, 227 Mass. 382. Smith v. Bowen, 232 Mass. 106. Folsom Engraving Co. v. McNeil, 235 Mass. 269.
The strike being illegal, St. 1913, c. 690, is not applicable, and the maintenance by the union of relays of pickets from twenty-five to seventy-five in number, patrolling the streets in the vicinity and at the main entrance of the company’s factory calling out at various times the epithets recited in the report, while not sufficient as the master finds to frighten or coerce other employees, was unjustifiable. Sherry v. Perkins, 147 Mass. 212. The action taken also was intended to be an interference with existing contracts. Before the vote to strike was taken the union appointed committees who were instructed to investigate and report the names of members who had signed existing contracts in order that charges could be preferred against them, and some fifty-nine members who had signed contracts joined the strikers of whom five were in the ranks of the picketers. The circulars which were distributed as we have said directly and indirectly assailed the individual contract system. It is plain on the entire report that what was done was the outgrowth of concerted action manifested in various forms but all for the single purpose of forcing com*545pliance with the terms of the union. Reynolds v. Davis, 198 Mass. 294. Folsom v. Lewis, 208 Mass. 336. Folsom Engraving Co. v. McNeil, 235 Mass. 269.
We are therefore of opinion that the injunctive relief granted is supported by the record, and the decree should be affirmed with costs.
Ordered accordingly.