3. Does the EERA give PERB exclusive initial jurisdiction over remedies against strikes that it properly could find were unfair practices?
Petitioners and PERB both invoke an NLRB analogy and argue that PERB had exclusive initial jurisdiction to determine whether the SDTA strike was an unfair practice and, if so, whether temporary judicial relief was appropriate. Neither federal nor state courts may grant relief on grounds that arguably would justify an NLRB remedy against an unfair practice (29 U.S.C. §§ 158, 160) without deferring to the exclusive initial jurisdiction of the NLRB. (Sears, Roebuck & Co. v. Carpenters, supra, 436 U.S. 180, 186-188, 198 [56 L.Ed.2d 209, 219, 226 (98 S.Ct. 1745)]; San Diego Unions v. Garmon (1959) 359 U.S. 236, 245 [3 L.Ed.2d 775, 783, 79 S.Ct. 773].) The aim of that rule is to help bring expertise and uniformity to the delicate task of stablizing labor relations. (Motor Coach Employees v. Lockridge (1971) 403 U.S. 274, 286-288 [29 L.Ed.2d 473, 482-484, 91 S.Ct. 1909]; Garner v. Teamsters Union (1953) 346 U.S. 485, 490-491 [98 L.Ed. 228, 239-240, 74 S.Ct. 161].) Though the rule as it relates to NLRB has been enunciated in the context of conflict between a federal agency and state courts, a like principle applies to parallel conflicts between California agencies and courts. (United Farm Workers, v. Superior Court (1977) 72 Cal.App.3d 268, 273 [140 Cal.Rptr. 87] (declaratory relief unavailable when issue could be raised in ALRB proceeding); cf. Morton v. Superior Court (1970) 9 Cal.App.3d 977 [88 Cal.Rptr. 533] (police officers’ suit over terms of employment precluded by failure to resort to grievance procedure).)
There are marked similarities between EERA and NLRA (29 U.S.C. § 151 et seq.). Both are administered by fulltime boards (§ 3541, subds. (a), (c); 29 U.S.C. §§ 153(a), 154(a)). Both boards employ a general counsel (§ 3541, subd. (e); 29 U.S.C. § 153(d)), have rulemaking power (§ 3541.3, subd. (g); 29 U.S.C. § 156) as well as authority over questions of representation (§§ 3541.3, subds. (a), (c), 3544.5, subd. (d), 3544.7, 3545; 29 U.S.C. §§ 153(b), 159) and can investigate, adjudicate, and issue orders against unfair practices (§§ 3541.3, subds. (i), (j), 3541.5; 29 U.S.C. §§ 160, 161). Courts that review or enforce those orders must treat board findings as conclusive if supported by substantial evidence. (§ 3542; 29 U.S.C. §§ 160(e), 160(f).)
Further, as if exclusive initial jurisdiction were not amply implied by the comprehensiveness of the EERA scheme, section 3541.5 declares: “The initial determination as to whether the charges of unfair practices are justified, and, if so, what remedy is necessary to effectuate the purposes of this chapter, shall be a matter within the exclusive jurisdiction of the boárd.” In his amicus brief PERB member Gonzales