LAB §1155.3: (a) Where there is in effect a collective-bargaining contract covering agricultural employees, the duty to bargain collectively shall also mean that no party to such contract shall terminate or modify

(a) Where there is in effect a collective-bargaining contract covering agricultural employees, the duty to bargain collectively shall also mean that no party to such contract shall terminate or modify such contract, unless the party desiring such termination or modification does all of the following: (1) Serves a written notice upon the other party to the contract of the proposed termination or modification not less than 60 days prior to the expiration date thereof, or, in the event such contract contains no expiration date, 60 days prior to the time it is proposed to make such termination or modification. (2) Offers to meet and confer with the other party for the purpose of negotiating a new contract or a contract containing the proposed modifications. (3) Notifies the Conciliation Service of the State of California within 30 days after such notice of the existence of a dispute, provided no agreement has been reached by that time. (4) Continues in full force and effect, without resorting to strike or lockout, all the terms and conditions of the existing contract, for a period of 60 days after such notice is given, or until the expiration date of such contract, whichever occurs later. (b) The duties imposed upon agricultural employers and labor organizations by paragraphs (2), (3), and (4) of subdivision (a) shall become inapplicable upon an intervening certification of the board that the labor organization or individual which is a party to the contract has been superseded as, or has ceased to be the representative of the employees, subject to the provisions of Chapter 5 (commencing with Section 1156) of this part, and the duties so imposed shall not be construed to require either party to discuss or agree to any modification of the terms and conditions contained in a contract for a fixed period, if such modification is to become effective before such terms and conditions can be reopened under the provisions of the contract. Any agricultural employee who engages in a strike within the 60-day period specified in this section shall lose his status as an agricultural employee of the agricultural employer engaged in the particular labor dispute, for the purposes of Section 1153 to 1154 inclusive, and Chapters 5 (commencing with Section 1156) and 6 (commencing with Section 1160) of this part, but such loss of status for such employee shall terminate if and when he is reemployed by such employer.