The constitutionality of St. 1909, c. 514, § 21, as amended by St. 1914, c. 474, and St. 1914, c. 600, are assailed in this suit as contravening the rights secured both by the Fourteenth Amendment to the Federal Constitution and by art. 12 of the Declaration of Rights.
In substance, these acts require that “in the employment of mechanics and laborers in the construction of public works by the Commonwealth, any county, city or town, or by persons contracting therewith, preference shall be given.to citizens of the Commonwealth;” and that, “in all work of any branch of the service of the Commonwealth, or of any city or town,” a like preference shall be given.
Since the argument of the case at bar, the federal questions involved have been decided adversely to the contentions of the plaintiff. Heim v. McCall, 239 U. S. 175. Crane v. New York, 239 U. S. 195, affirming People v. Crane, 214 N. Y. 154. Elkan v. Maryland, 239 U. S. 634. By these decisions statutes of other States, indistinguishable so far as concerns their constitutionality in any material particular from those here attacked, have been upheld as not violative of any right protected by the Federal Constitution or secured by treaty of the United States with Italy and by other treaties containing “the most favored nation clause.” On the authority of these cases, it must be held without further discussion *112that the instant statutes are not inconsistent with the Federal Constitution and treaties.
"While the provisions of our Constitution are not in the same words as those of the United States Constitution upon this subject, the result must be reached that these statutes are not in conflict with the State Constitution. The decision upon this point is concluded in principle by Woods v. Woburn, 220 Mass. 416, following the reasoning and conclusion set forth in Opinion of the Justices, 208 Mass. 619, where the power of the Legislature was upheld to fix the number of hours which shall constitute a day’s labor for employees of the Commonwealth and its governmental subdivisions, and by the reasoning of the decisions of the United States Supreme Court just cited. The cities and towns of the Commonwealth are divisions of government established in the public interests. The Legislature is supreme in the control of these governmental instrumentalities, subject to the provisions of the Constitution.. In its representative capacity, within appropriate functions of legislation, the General Court stands in the position of employer. It may establish general rules for the employment of labor. Since it is a public agency directing the expenditure of money raised by taxation, it cannot make arbitrary discriminations and favor the employment of one class of citizens to the exclusion of others. But a preference of citizens over aliens in the public service is not favoritism among the subjects of the Commonwealth. Aliens are not members of the State in the strict sense. Statutory discriminations in favor of citizens and against aliens have been upheld. In Commonwealth v. Hilton, 174 Mass. 29, regulations restricting to inhabitants the right to take clams were sustained, and in Commonwealth v. Hana, 195 Mass. 262, a requirement that licenses to pedlers should be granted only to those who had declared an intention to become citizens was held to be valid. Where the State, either directly or through its governmental departments, acts as proprietor or employer, a determination not to engage aliens in its service cannot be pronounced unreasonable or violative of any constitutional mandate.
The distinction between laws passed by the Legislature regulating the conduct of the State and its departments and subdivisions as employer, which are within its right, and similar laws designed to control the conduct of the general public, is adverted to in Truax v. Raich, 239 U. S. 33. A law of the latter class there was *113held to fall under the condemnation of the fundamental law. But the present statutes belong plainly to the former class.
It cannot be said that these statutes are void for indefiniteness or vagueness. Preference to citizens over aliens in employment in its ordinary sense means that; where other considerations are equal, the opportunity for employment shall go to the citizens.
The provisions of St. 1914, c. 600, §§ 2-4, in relation to the civil service, appear to be too plain to require general discussion.
“Public works,” as used in St. 1914, c. 474, are not words so uncertain in significance as to affect the validity of the statute. Doubtless in the ordinary case there would be little difficulty in determining their meaning. Manifestly, in this connection water works are public works. See Milford Water Co. v. Hopkinton, 192 Mass. 491.
There is no force in the contention that St. 1914, c. 600, applies only to cities and towns where the classified civil service prevails under the civil service law. Section one of the act is not thus constricted by subsequent sections.
It is not necessary to determine whether the present statutes are so retroactive as to require the discharge of faithful and efficient aliens in service at the time of their enactment, or whether they relate only to the future, see Hanscom v. Malden & Melrose Gas Light Co. 220 Mass. 1; for the plaintiffs on the allegations of the bill do not show themselves entitled to relief. Steele v. Municipal Signal Co. 160 Mass. 36. Sylvester v. Webb, 179 Mass. 236, 241.
Bill dismissed without costs.