2005 California Labor Code Sections 1152 CHAPTER 3. RIGHTS OF AGRICULTURAL EMPLOYEES

1152.  Employees shall have the right to self-organization, to form,
join, or assist labor organizations, to bargain collectively through
representatives of their own choosing, and to engage in other
concerted activities for the purpose of collective bargaining or
other mutual aid or protection, and shall also have the right to
refrain from any or all of such activities except to the extent that
such right may be affected by an agreement requiring membership in a
labor organization as a condition of continued employment as
authorized in subdivision (c) of Section 1153.