Cal. Pub. Res. Code § 43501.5

(a) In addition to the requirements of this article, and Section 21780 of Title 27 of the California Code of Regulations, a person who is required to file a final closure plan shall also file with the enforcement agency a Labor Transition Plan that includes all of the following:
1. (1) Provisions that ensure, subject to any requirements already established pursuant to a collective bargaining agreement, preferential reemployment and transfer rights of displaced employees to comparable available employment with the same employer for a period of no less than one year following the closure of the solid waste facility.
2. (2) Provisions to provide displaced employees assistance in finding comparable employment with other employers.
3. (3) Provisions to ensure compliance with all applicable provisions of Chapter 4 (commencing with Section 1400) of Part of 4 of Division 2 of the Labor Code.
(b) When submitting the final closure plan, the operator shall submit, in addition to the requirements of subdivision (a), a certification to the board and the enforcement agency that the provisions described in paragraphs (1) to (3), inclusive, of subdivision (a), will be implemented, subject to any requirements already established under a collective bargaining agreement.
(c) For the purposes of this section, “comparable employment” means the same or a substantially similar job classification at equal or greater wage and benefit levels in the same geographic region of the state.