LAB §1156.7: (a) No collective-bargaining agreement executed prior to the effective date of this chapter shall bar a petition for an election.

(a) No collective-bargaining agreement executed prior to the effective date of this chapter shall bar a petition for an election. (b) A collective-bargaining agreement executed by an employer and a labor organization certified as the exclusive bargaining representative of his employees pursuant to this chapter shall be a bar to a petition for an election among such employees for the term of the agreement, but in any event such bar shall not exceed three years, provided that both the following conditions are met: (1) The agreement is in writing and executed by all parties thereto. (2) It incorporates the substantive terms and conditions of employment of such employees. (c) Upon the filing with the board by an employee or group of employees of a petition signed by 30 percent or more of the agricultural employees in a bargaining unit represented by a certified labor organization which is a party to a valid collective-bargaining agreement, requesting that such labor organization be decertified, the board shall conduct an election by secret ballot pursuant to the applicable provisions of this chapter, and shall certify the results to such labor organization and employer. However, such a petition shall not be deemed timely unless it is filed during the year preceding the expiration of a collective-bargaining agreement which would otherwise bar the holding of an election, and when the number of agricultural employees is not less than 50 percent of the employer’s peak agricultural employment for the current calendar year. (d) Upon the filing with the board of a signed petition by an agricultural employee or group of agricultural employees, or any individual or labor organization acting in their behalf, accompanied by authorization cards signed by a majority of the employees in an appropriate bargaining unit, and alleging all the conditions of paragraphs (1), (2), and (3), the board shall immediately investigate such petition and, if it has reasonable cause to believe that a bona fide question of representation exists, it shall direct an election by secret ballot pursuant to the applicable provisions of this chapter: (1) That the number of agricultural employees currently employed by the employer named in the petition, as determined from his payroll immediately preceding the filing of the petition, is not less than 50 percent of his peak agricultural employment for the current calendar year. (2) That no valid election pursuant to this section has been conducted among the agricultural employees of the employer named in the petition within the 12 months immediately preceding the filing thereof. (3) That a labor organization, certified for an appropriate unit, has a collective-bargaining agreement with the employer which would otherwise bar the holding of an election and that this agreement will expire within the next 12 months.