Cal. Welfare and Institutions Code § 4689.9

(a) It is the intent of the Legislature in enacting this section to establish that hourly workers providing supported living services to individuals served by regional centers have a right to overtime compensation for all hours worked over 40 hours per workweek. (b) Notwithstanding any other state or federal law or regulation concerning overtime pay, including but not limited to, federal regulations implementing the federal Fair Labor Standards Act of 1938 (29 U.S.C. Sec. 201 et seq.), hourly workers who provide supported living services, as defined in Section 54302(a)(71) of Title 17 of the California Code of Regulations, to individuals served by regional centers, as defined in Section 54302(a)(54) of Title 17 of the California Code of Regulations, and who are employed by a vendor, as defined in Section 54302(a)(74) of Title 17 of the California Code of Regulations, shall be compensated for overtime at the rate of one and one-half times the employee’s regular rate of pay for all hours worked over 40 hours per workweek. Unless a vendor specifies otherwise, a workweek is defined as beginning at 12:00 a.m. on Sunday and terminating at 11:59 p.m. the following Saturday.