This is a bill under G. L. c. 231A, “to determine the construction and validity” of G. L. c. 128A, § 9, and of a rule made by the defendant pursuant thereto, and also to determine “the rights, duties, status, and other legal relations of the . . . [plaintiffs] under and in the light of” said statute and rule.
The plaintiffs are an individual licensed owner of thorough *153 bred racehorses and an association the members of which consist of either owners, owner-trainers or trainers of such horses. 1 The defendant is the “state racing commission” (Commission) existing under G. L. c. 6, § 48, and having all of the jurisdiction, power and authority given to it under G. L. c. 128A.
The case was submitted to a judge of the Superior Court for decision on a statement of agreed facts constituting a case stated. In this situation we are in a position to decide the questions of law involved unaffected by the decision of the trial judge.
Stamper
v.
Stanwood,
We summarize the facts to which the parties have agreed, but only to the extent necessary for this decision. The Commission issued a license for the year 1970 to the individual plaintiff as the owner of horses participating in horse racing in this Commonwealth. 2 General Laws c. 128A, § 9, as amended through St. 1935, c. 454, • § 5, provides in part that “[t]he commission shall have full power to *154 prescribe rules, regulations and conditions under which all horse or dog races at horse or dog racing meetings shall be conducted in the commonwealth.” On May 1, 1967, the Commission prescribed and published a comprehensive set of rules entitled, “Rules of Horse Racing.” Rule 281 thereof provided that “Jockey’s riding fees, in the absence of a contract shall be as follows” and then specified the fees which ranged from a low of $10 to a high of $50, depending on the amount of the purse for the race and the order or position in which the horse finished the race. On April 15, 1970, the Commission adopted an amendment to the rule to take effect on April 20, 1970. The rule as amended read as follows:
“281. The fee to a jockey in all races shall be, in the absence of special agreement, as follows:
Winning Second Third Losing Purse Mount Mount Mount Mount
$400. and under $27. $18. $16. $15.
600. 30. 20. 17. 15.
600. 36. 22. 17. 15.
700.-900. 10% of Win Purse 25. 22. 19.
1,000.-1,400. 10% of Win Purse 30. 25. 20.
1,500.-1,900. 10% of Win Purse 35. 30. 25.
2,000.-3,400. 10.% of Win Purse 45. 35. 30.
3,500.-4,900. 10% of Win Purse 50. 40. 30.
5,000. and up 10% of Win Purse 55. 45. 35. ”
At a hearing held by the Commission on April 8, 1970, on the proposed amendment to its Rule 281, the plaintiffs raised the issue of the constitutionality of G. L. c. 128A, § 9, and of Rule 281 in its form before the amendment and as proposed by the amendment.
The judge of the Superior Court decided that “Chapter 128A is constitutional” and that “Rule 281 as amended and adopted by the State Racing Commission is arbitrary, unreasonable and unconstitutional, and . . . should be declared null and void.” The Commission appealed from a final decree to that effect. The plaintiffs did not appeal. The plaintiffs’ brief makes no argument that G. L. c. 128A, *155 § 9, is unconstitutional, and it argues only the alleged unconstitutionality or other invalidity of Rule 281. We conclude that the plaintiffs have therefore waived the contention originally made in their bill as to the unconstitutionality of § 9.
It appears from the case stated that the Commission complied fully with the procedural requirements of G. L. c. 30A, §§ 2 through 5, for the adoption of regulations in connection with amended Rule 281. The plaintiffs do not argue otherwise in their brief.
We thus start our consideration of the case with a valid delegation by the Legislature to the Commission of “full power to prescribe rules, regulations and conditions under which all horse or dog races at horse or dog racing meetings shall be conducted in the commonwealth.” The only questions are whether amended Rule 281 is within the scope of the rule-making power thus delegated to the Commission, and whether it is constitutional. The burden of proof with respect to each question is on the plaintiffs.
The business of running horse or dog racing meetings accompanied by pari-mutuel betting on the speed or ability of the racing animals was first made lawful in this Commonwealth by G. L. c. 128A, inserted by St. 1934, c. 374, § 3. By that statute the Legislature established the overall plan under which such meetings could be licensed and conducted, but it did not attempt to legislate on all of the details of the operation of the meetings. Instead it used the broadest of language possible in § 9 to delegate “full power” to the Commission to prescribe rules, regulations and conditions for the conduct of such meetings. We hold that Rule 281 relating to fees payable to jockeys “in the absence of special agreement” is within the scope of the rule-making power delegated to the Commission by the Legislature. See
Bay State Harness Horse Racing & Breeding Assn. Inc.
v.
State Racing Commn.
The test of the constitutionality of Rule 281 is the same which would be applied to a statute. The rule “stands on the same footing as would a statute, ordinance, or by-law.”
*156
Druzik
v.
Board of Health of Haverhill,
Since the question is presented to us on a case stated, the plaintiffs have the burden of proving on that record the absence of any conceivable grounds upon which Rule 281 may be upheld. The record does not establish the absence of such grounds. This deficiency cannot be overcome by any argument that the record does not affirmatively show facts upon which the rule may be supported.
Mile Road Corp.
v.
Boston,
The plaintiffs make the specific argument that Rule 281, as amended, is unconstitutional for several reasons which, fairly summarized, seem to be that the rule (a) denies them *157 equal protection of the laws because the fees payable to racing meeting employees other than jockeys are not regulated, (b) denies them equal protection of the laws because it abridges or interferes with their freedom of contract, and (c) deprives them of their property, viz. their “bargaining posture,” without due process of law. The validity of these arguments must be considered solely on the basis of what is contained in the case stated.
The case stated is silent as to the factual situation against which the Commission adopted amended Rule 281. The presumption of validity permits a conclusion that it was conceivable that grounds existed which warranted the singling out of jockeys’ fees for regulation - by rule. See
Lindsley
v.
Natural Carbonic Gas Co.
The other arguments relating to alleged deprivation of property and interference with freedom of contract must be judged by a consideration of the language of Rule 281 itself and of our interpretation of the rule. Testing the rule by the same standards which we would apply to a statute, “[all] rational presumptions are made in favor of . . . [its] validity . . . and . . . [i]t will not be declared void unless it is impossible by any reasonable construction to interpret its provisions in harmony with the Constitution.”
Perkins
v.
Westwood,
Rule 281 recognizes the right of a racehorse owner and a jockey to negotiate and enter into a “special agreement” fixing the amount of the fee to be paid the jockey for riding the horse in a race. If they enter into such an agreement, the fee thus fixed will be payable to the jockey. If the owner *158 engages or permits the jockey to ride his horse in a race without such an agreement as to the jockey’s fee, then the fee payable to the jockey is governed by the provisions of Rule 281. We construe the words “special agreement” as used in the rule to mean an express agreement with respect to the fee. The owner is not compelled to hire the jockey to ride a horse for the fee fixed by the rule, and the jockey is not compelled to hire himself out to the owner for such a fee. They are free, if they wish, to agree on a fee which is lower or higher than that stated in the rule, or not to agree to anything. As thus construed the rule involves no abridgement or interference with the freedom of either the owner or jockey to contract. Neither does it diminish or take away the bargaining posture of either the owner or the jockey. It therefore violates no constitutional rights of the plaintiffs.
We note that a virtually identical rule was held to be constitutional in the case of
Chicago Div. of the Horsemen’s Benevolent & Protective Assn.
v.
Illinois Racing Bd.
In
Donovan
v.
Eastern Racing Assn. Inc.
It is not open to this court to question the wisdom of the rules adopted by the Commission so long as they are within the limits of the power delegated to it. “Judicial inquiry does not extend to the expediency, wisdom or necessity of the legislative [or Commission sj judgment for that is a function that rests entirely with the law-making [or rule-making] department.”
Slome
v.
Chief of Police of Fitchburg,
We. hold that the Commission had the power and authority to adopt Bule 281 in its amended form, and that the rule is not imconstitutional or otherwise invalid. The final decree is reversed and a new decree is to be entered in accordance herewith.
So ordered.
Notes
The bill describes the association as follows: The plaintiff, “Horsemen’s Benevolent and Protective Association, is a charitable corporation duly organized and existing under the laws of the state of Rhode Island, which corporation conducts its affairs in the United States and other countries by unincorporated regional divisions of which the New England Division is the representative in the Commonwealth of Massachusetts.” If the bill intends that the Massachusetts unincorporated association- rather than the Rhode Island corporation is the plaintiff, the named individual may be the only proper plaintiff. Such an unincorporated association is not a legal entity known to the law, and none of its members has joined as fairly representative of all of the members.
Pickett
v.
Walsh,
General Laws c. 128A, § 9A, as appearing in St. 1956, c. 454, provides in part that “the rules, regulations and conditions prescribed by the commission under section nine may provide ... for the licensing at reasonable and uniform fees of owners, trainers, jockeys and stable employees at horse tracks.” The Commission made such provision in its rules. See Rules of Horse Racing of May 1, 1967, Rules 367 through 382A.
This “small per cent to the management” is 7% % for running horse racing meetings. In addition the total amounts bet are further reduced before payment to bettors by reason of payments to the Commonwealth. The combined total of the deductions for the management and the Commonwealth are 16% for ranning horse racing meetings. 6. L. c. 128A, $ 6, as amended through St. 1969, c. 807, 63.
