Petitioners, a labor union, several of its officers, and a central labor council, seek a writ of prohibition restraining the respondent superior court from taking any further proceedings in an action for injunctive relief brought against them by real parties in interest Charles 0. Finley & Company, Inc. (Finley) and the Oakland-Alameda County Coliseum, Inc. (Coliseum) and from enforcing any orders or injunctions issued in said action. Finley is the owner of the Oakland Athletics, a professional baseball team affiliated with the American League. Coliseum, a nonprofit California corporation is the lessee and operator of the Oakland-Alameda County Cоliseum Complex (hereafter Coliseum Complex) which is the site of the Athletics’ home games.
*699 We first set forth the pertinent background facts. In the main action seeking an injunction Finley and Coliseum alleged in their complaint that the defendants American Federation of Musicians, Musicians’ Union, Local No. 6 (Musicians Union), its named officers, and Alameda County Central Labor Council (Labor Council) all of whom are petitioners herein, threatened to interfere with the exhibition of the baseball game between the Athletics and the Baltimore Orioles on April 17,1968, the opening day of the home season. Finley sought to hire an organist who was a member of the Musicians’ Union to play at all home games, and a band of 25 union members to play at the opening game. The union denied its members permission to perform, demanding that Finley employ a union band at all weekend home games. Finley refused and the union stationed pickets at all entrances to the Coliseum site to carry signs stating, ‘ ‘ This Employer is Unfair to Musicians Union Local No. 6.”
The complaint further alleged that the defendants had begun, and would continue, to place pickets and distribute handbills at the entrances to the Coliseum Complex and would trespass upon the property leased by Coliseum. Allegedly, the purpose of the piсketing was to coerce Finley to employ musicians at all weekend home games and to further coerce both Finley and Coliseum “by causing the Unions representing building trades and other persons to refrain from operating and performing their trades in the Coliseum Complex.” The result, according to the complaint, would be to substantially interfere with the exhibition of the opening baseball game. It was additionally charged that the further effect of any picketing would be to cause the plaintiffs and the public great and irreparable injury. 1
*700 After a hearing at which Finley, Coliseum, and the union appeared, respondent court issued a tеmporary restraining order on April 16, 1968, enjoining petitioners from “congregating, gathering, massing, demonstrating, marching, picketing, or maintaining or stationing any signs, pickets, or other persons or automobiles at the entrances of the property, or any portion thereof, described in detail in Exhibit A attached hereto and commonly known as the Coliseum Complex for any purpose relating to the hiring of musicians by Charles 0. Finley & Co., Inc., or others.” The order was effective until May 6, 1968, when respondent court issued a preliminary injunction to the same effect. Upon petitioner’s application we issued an alternative writ of prohibition restraining аll further proceedings, including the enforcement of the injunction.
We have concluded that respondent court was without jurisdiction to issue the injunction. As we explain, infra, under federal law the controversy is subject to the jurisdiction of the National Labor Relations Board (Board). Real parties in interest have failed to demonstrate that the Board in its discretion would decline to assert jurisdiction. Respondent has enjoined activities that are “arguably” protected or prohibited by federal law; therefore only Congress may regulate them. Moreover, the injunction cannot be justified as an exercise of the power reservеd to the states to ensure public health and safety. The peremptory writ must therefore issue. 2
The Labor Management Relations Act (Act) aims “to promote the full flow of commerce . . . and to protect the rights of the public in connection with labor disputes affecting commerce.” (29 U.S.C.A. § 141.) The Board “is empowered ... to prevent any person from engaging in any unfair labor practice . . . affecting commerce.” (29 U.S.C.A. § 160(a).) “The term ‘commerce’ means trade, traffic, commerce, transportation, or communication among the several States. . . .” *701 (29 U.S.C.A. § 152(6).) “The term ‘affecting commerce’ means in commerce, or burdening or obstructing commerce or the free flow of commerce, or having led or tending to lead to a labor dispute burdening or obstructing commerce or the free flow of commerce.” (29 U.S.C.A. §152(7); “The term ‘ industry affecting commerce' means any industry or activity in commerce or in which a labor dispute would burden or obstruct commerce ... or the free flow of commerce.” (29 U.S.C.A. §142(1).)
The Act “evidences the intention of Congress to exercise whatever power is constitutionally given to it to regulate commerce. ...”
(N.L.R.B.
v.
Fainblatt
(1939)
Major league baseball teams play in eight states in the National League and in eight states and the District of Columbia in the American League. Widely distributed capital investments facilitate competition between teams constantly traveling between states. Clubs receive and expend large sums of money transmitted between states. They purchase materials in interstate commerce. Large audiences often travel across state lines to attend games. Radio and television coverage brings games, accompanied by interstate advertising of products and services, to still larger audiences beyond state lines. Major league teams are affiliated with minor league clubs comprising an organized “farm system” in several states. (See dissenting opinion of Burton, J. in
Toolson
v.
New York Yankees
(1953)
Real parties in interest contend, however, that the activities of a major league baseball club do not constitute interstate commerce, and that the Board is therefore without jurisdiction to regulate its labor relations. They rely on
Federal Base Ball Club
v.
National League
(1922)
In
Toolson
v.
New York Yankees, supra,
No such exemption created by judicial decision and nurtured by legislative acquiescence existed in professional football and boxing, however. The Supreme Court therefore applied federal antitrust laws to those sports upon the finding that they constitute interstate commerce.
(Radovich
v.
National Football League, supra,
Real parties in interest contend, however, that the Board would decline to assert jurisdiction over the dispute, and that respondent court therefore had jurisdiction in the premises. Section 14(c) of the Act provides that “(1) The Board, in its discretion, may, by rule of decision or by published rules . . . , decline to assert jurisdiction over any labor dispute involving any class or category of employers, where, in the opinion of the Board, the effect of such labor dispute on commerce is not sufficiently substantial to warrant the exercise of its jurisdiction ... (2) Nothing in this sub-chapter shall be deemed to prevent or bar any agency or the courts of any State . . . , from assuming and asserting jurisdiction over labor disputes over which the Board declines, pursuant to paragraph (1) of this subsection to assert jurisdiction.” (29 U.S.C.A. § 164(c).)
Real parties in interest as the parties seeking relief in the main action have failed to sustain thеir burden of establishing that the Board would not hear this cause.
(Russell
v.
Electrical Workers Local 569
(1966)
Real parties in interest point out that the Board has never asserted jurisdiction over disputes involving professional sports teams. Thе Board has only twice refused to assert jurisdiction over such cases, however, and neither refusal constitutes a “rule of decision” or “published rule” that section 14(c) requires the exclusion of a class or category of employers from the Board’s jurisdiction. On June 11, 1946, the Board ordered its regional office in Pittsburgh to dismiss a petition by the American Baseball Guild against the Pittsburgh Pirates, but gave no reason for its order and was careful to point out that the order did not constitute an opinion. (N.T. Times, June 12, 1946, at p. 19, col. 6.) In 1959, the Board’s Sixth Region dismissed a petition for an election by the ground crew and maintenance personnel employed by the
*705
Pittsburgh Athletic Co., on the ground that to assert its jurisdiction “would not effectuate the purposes” of the Act.
(Pittsburgh Athletic Co.
(1959)
It is true that the Board has on some occasions declined to assert jurisdiction over segments of the sports and entertainment industries. (E.g.,
Olympia Stadium Corp.
(1949)
Section 7 of the Act provides that “Employees shall have the right ... to engage in . . . concerted activities for the
*706
purpose of . . . mutual aid or protection. ...” (29 U.S.C.A. § 157.) Section 8 defines activities that constitute unfair labor practices. (29 U.S.C.A. § 158.) “When an activity is arguably subject to [section] 7 or [section] 8 of the Act, the States as well as the federal courts must defer to the exclusive competence of the [Board] if the danger of state interference with national policy is to be averted.”
(San Diego Bldg. Trades Council
v.
Garmon
(1959)
Petitioners’ picketing for the purpose of obtaining employment
by
Finley of a union band at all weekend home games “arguably” constitutes “concerted activities for the purpose of . . . mutual aid or protection, ...” within the meaning of section 7. (29 U.S.C.A. § 157.) “For generations professional musicians have faced a shortage in the local employment needed to yield them a livelihood. They have been confronted with the competition of military bands, traveling bands, foreign musicians on tour, local amateur organizations and, more recently, technological developments in reproduction and broadcasting.”
(N.L.R.B.
v.
Gamble Enterprises
(1953)
Nor does section 8(b)(6), the so-called “anti-featherbedding” provision, prohibit such activity. That section provides that it is an unfair labor practice for a labor organization “to cause or attempt to cause an employer to pay or deliver or agree to pay or deliver any money or other thing of value, in the nature of an exaction, for services which are not performed and not to be performed, ...” (29 U.S.C.A. § 158(b) (6).) Although the employer may neither want nor need the services that the union offers, the union’s insistence that he accept them does not violate section 8(b) (6).
(American Newspaper Publishers Assn.
v.
N.L.R.B.
(1953)
Moreover, picketing for employees’ “mutual aid or protection” is a classic form of “concerted activities” within the meaning of section 7. The Act prescribes a detailed procedure for restraint of types of picketing specified in section 8. Such prescription “would seem to imply that other picketing is to be free of other methods and sources of restraint. For the policy of the [Act] is not to condemn all picketing but only that ascertained by its prescribed processes to fall within its prohibitions. Otherwise, it is implicit in the Act that the public interest is served by freedom of labor to use the weapon of picketing. For a state to impinge on the area of labor combat designed to be free is quite as much an obstruction of federal policy as if the state were to declare picketing free for рurposes or by methods which the federal Act prohibits.”
(Garner
v.
Teamsters Union, supra,
*708
men
(1964)
The fact that the pickets in the present case were not employees of Finley in no way dilutes the protection afforded by section 7. “The term ‘employee’ shall include any employee, and shall not be limited to the employees of a particular employer, ...” (29 U.S.C.A. §152(3); see
Waxman
v.
Virginia
(1962)
Moreover, petitioner's activities in the present case “arguably” constitute an unfair labor practice prohibited by section 8 (b) (4) (i) (B) of the Act. That section makes it unlawful for a labor organization “. . . to induce or encourage any individual employed by any person engaged in commerce or in an industry affecting commerce to engage in ... a refusal in the course of his employment ... to perform any services . . . where ... an object thereof is . . . forcing or requiring any person ... to cease doing business with any other person, ...” (29 U.S.C.A. § 158(b) (4) (i) (B).)
The complaint upon which the injunction was issued alleged that employees performing services at the Coliseum Complex refused to cross petitioner’s picket lines, and that employees of Coliseum might refuse to cross those lines on the opening game. Thus the picketing might well have induced employees of Coliseum, the secondary employer with whom petitioners had no dispute, to refuse to perform services. Whether Coliseum is engaged in commerce or in an
*710
industry affecting commerce would not necessarily control the Board’s jurisdictiоn over secondary picketing, for such jurisdiction "may be satisfied by reference to the business operations of either the primary [Finley and the Oakland Athletics] or the secondary employer.”
(Hattiesburg Unions
v.
Broome Co.
(1964)
Additionally, real parties in interest have failed to justify the injunction as an exercise of the power reserved to the states to prevent "mass picketing, threatening employees desiring to work with physical injury or property damage, obstructing entrance to and egress from the company’s factory, obstructing the streets and public roads surrounding the factory, and picketing the homes of employees.”
(Allen-Bradley Local No. 1111
v.
Wisconsin Bmp. Relations Board
(1942)
Real parties in interest contend that respondent court had jurisdiction to enjoin petitioners from trespassing upon property held by Coliseum as lessee from the City of Oakland and the County of Alameda. In
Amalgamated Meat Cutters etc. Workmen
v.
Fairlawn Meats
(1957)
The Supreme Court has not specifically answered the question left open in Fairlawn Meats. It has never authorized the states, however, to prohibit peaceful picketing that the Act regulates. Moreover, it is clear that a blanket application of the states’ trespass laws to prohibit such picketing “would tend to frustrate uniform application of federal labor legislation.” (Note (I960) 73 Harv.L.Rev. 1216, 1219.) Unlike the power to prevent violence and public disorder, the power to prohibit peaceful picketing that trespasses on the premises of employers involved in labor disputes would “leave the States free to regulate conduct so plainly within the central aim of federal regulation. ...” (San Diego Bldg. Trades Council
*712
v.
Garmon, supra,
There may be circumstances in which the use of trespass laws in labor controversies would reach activities that would have “no relevance to the Board’s function,” and the state’s power to enjoin them “would not interfere with the Board’s jurisdiction over the merits of the labor controversy.”
(Linn
v.
Plant Guard Workers
(1966)
For the foregoing reasons we have concluded that respondent superior court did not have jurisdiction to enjoin petitioners’ activities. The relief prayed for must therefore be granted.
*713 Let a peremptory writ of prohibition issue restraining all further proceedings in Charles 0. Finley & Co., Inc., et al. v. American Federation of Musicians, et al., Alameda Superior Court No. 378872, including the enforcement of any orders or injunctions heretofore issued in said action.
Traynor, C. J., Peters, J., Mosk, J., Burke, J., and Peek, J., * concurred.
McCOMB, J.—I dissent. I would deny the writ.
Notes
The complaint alleged as follows: “That the further effect of any picketing will he to cause plaintiffs and the public great and irreparable injury in that (a) over 50,000 baseball fans have purchased tickets to attend the Athletics-Orioles professional baseball game on April 17, 1968, (b) that these patrons comprise a general cross section of the public, including elderly persons, women and children, (e) over 90% of the patrons will arrive at the game by public or private vehicular transportation, (d) that many of these patrons are unfamiliar with the Coliseum site, (e) that certain patrons of the plaintiffs and their licensees, including tlie parking lot attendants, special police, crowd controllers, ushers, nurses and maintenance men, may refuse to cross a picket line or work at plaintiff Coliseum, Inc.’s premises, (f) that the placing of pickets would result in interference with plaintiffs’ ability to direct, manage, control and provide for the safety and welfare of the public, (g) that under the above circumstances and conditions the arrival of 50,000 *700 patrons at the Coliseum Complex directly threatens a public calamity and risk of injury, (h) that under the circumstances, the action of the pickets will result in serious injury to the person and proрerty of others and will seriously endanger the public peace and health. ’ ’
The absence of another adequate remedy was determined when we granted the alternative writ. (See
Rosemont
v.
Superior Court
(1964)
In 1951 four kills dealing with, professional baseball and the anti-i trust laws were introduced in Congress. Hearings were held on the bills by the Subcommittee on Study of Monopoly Power of the House Committee on the Judiciary (see Hearings on Organized Baseball Before the Subeom. on the Study of Monopoly Power of the House Com. on the Judiciary, 82d Cong., 1st Sess., ser. 1, pt. 6 (1951)), but no further action was taken. Between 1951 and 1965, 60 bills dealing with the status of. organized sports under the antitrust laws were introduced in Cоngress. Some of these bills aimed to eliminate the inconsistencies between the Toolson and Bad.omdh eases. (H.R. Rep. No. 462, 89th Gong., 1st Sess. at 6 (1965). See e.g., Hearings on Organized Professional Team Sports Before the Antitrust Subeom. No. 5 of the House Com. on the Judiciary, 85th Cong., 1st Sess., ser. 8, pt. 1, at 1 (1957); H.R. Rep. No. 1720, 85tb Cong., 2d Sess. (1958).)
Real parties in interest argue that the rule of Russell—i.e., that the party seeking to invoke state court jurisdiction bears the burden of showing that the Board would decline to assert jurisdiction if application were made to it—is applicable only on direct appeal, and that in prohibition proceedings the burden shifts to the petitioner for prohibition, who must therefore show that the Board
would, assert
jurisdiction. In making this contention real parties in interest rely upon
Retail Clerks’ Union
v.
Superior Court
(1959)
In the instant ease, petitioners alleged in their petition fоr prohibition that “The Oakland Athletics team plays in various states throughout the United States and obtains a gross annual revenue in excess of $1,000,000”; that “No attempt has been made to invoke the jurisdiction of the National Labor Relations Board”; that “Each of the foregoing factual allegations is supported by admission or uncontradicted evidence submitted to Respondent Court”; and that “Each of the foregoing objections to the jurisdiction of Respondent Court were asserted by Petitioners in the proceedings complained of.” Real parties in interest have at no time in this proceeding denied the truth of these allegatiоns, and must therefore be deemed to have admitted the same. Therefore, in this ease, unlike in the eases cited by real parties in interest, the parties seeking prohibition have made a sufficient factual showing as to the effect of the activity in question upon interstate commerce, and prohibition will issue unless real parties in interest can successfully bear the burden of showing “on the basis of published regulations and decision of the [B]oard, that the case is one which the [B]oard would decline to hear.”
(Russell
v.
Electrical Workers Local 569, supra,
In
Russell
we issued the following
caveat-.
“Prudent counsel, contemplating the fact that the plaintiff bears the burden of persuading the state court that the board wоuld decline to proceed, might be well advised to secure such opinions in cases raising close issues as to the exercise of board jurisdiction.” (
This conclusion has been reached in light of interpretive guidelines announced by this court in
Grunwald-Marx, Inc.
v.
Los Angeles Joint Board
(1959)
At oral argument real parties in interest raised for the first time a contention which we understand as follows: Although the аctivities of the union here in question are not arguably prohibited under section 8(b)(6) of the Act
(American Newspaper Publishers Assn.
v.
N.L.E.B., supra,
The difficulty with this contention is that we neither have been directed to nor have been able to find any case wherein activity even remotely related to that here in question has been held in violation of the Hobbs Act.
United States
v.
Green, supra,
Accord: Your Food Stores of Santa Fe
v.
Retail Clerics, Local 156i
(D.C.N.M. 1954) 121 F.Snpp. 339, affd. (10th Cir. 1955)
Retired Associate Justice of the Supreme Court sitting under assignment by the Chairman of the Judicial Council.
