Wage Law

Employees working for a charter county are not governed by any IWC Wage Orders, and the county has exclusive authority to provide for the compensation and conditions of employment of its employees. Therefore, the employees cannot state a cause of action for failure to provide meal periods. Dimon v. County of Los Angeles (2008) 166 Cal.App.4th 1276.

the County has exclusive authority, as a charter county, to provide for the compensation and conditions of employment of its employees, and has done so with respect to probation officers through a collective bargaining agreement adopted by resolution.  It is thus exempt from state statutes and regulations governing meal breaks. 

You can download the full text of Dimon (for a while, at least), at links here in pdf or word format.