The mission of the California Labor Commissioner's Office is to ensure a just day's pay in every workplace in the State and to promote economic justice. California labor laws apply to most every worker working in California regardless of where your employer is located.Federal and state law requires that you as a nonexempt employee be paid for all of the hours you work. Yes, your employer can require that you stay on the premises during your rest break. Since you are being compensated for the time during your rest period. California overtime law requires employers to give overtime pay to non-exempt employees if they work more than eight hours in a single workday. There isn't a set restriction on how long a person can work in a day in California, but overtime regulations do apply. California's labor laws are notably proemployee, boasting minimum wage rates that surpass many states. Example, the California Access to Medical and Exposure. In California, there's no specific law mandating how many hours a salaried employee must work in a day.