California Code, Education Code - EDC § 87865

(a) A multidistrict part-time faculty member who individually purchases health insurance benefits is eligible to participate in the program established pursuant to this article.

(c) A community college district may require reasonable documentation from a multidistrict part-time faculty member to verify that the faculty member's total cumulative teaching assignments at two or more community college districts equals or exceeds 40 percent of the cumulative equivalent of a minimum full-time teaching assignment. A community college district may require reasonable documentation from a multidistrict part-time faculty member to determine the district's proportionate share, as described in subdivision (b), which may include, but is not necessarily limited to, documentation verifying enrollment in a health insurance plan and the premium paid for the health insurance plan.