Lab. Code, § 1174

Every person employing labor in this state shall:

(a) Furnish to the commission, at its request, reports or information that the commission requires to carry out this chapter. The reports and information shall be verified if required by the commission or any member thereof.

(b) Allow any member of the commission or the employees of the Division of Labor Standards Enforcement free access to the place of business or employment of the person to secure any information or make any investigation that they are authorized by this chapter to ascertain or make. The commission may inspect or make excerpts, relating to the employment of employees, from the books, reports, contracts, payrolls, documents, or papers of the person.

(c) Keep a record showing the names and addresses of all employees employed and the ages of all minors.

(d) Keep, at a central location in the state or at the plants or establishments at which employees are employed, payroll records showing the hours worked daily by and the wages paid to, and the number of piece-rate units earned by and any applicable piece rate paid to, employees employed at the respective plants or establishments. These records shall be kept in accordance with rules established for this purpose by the commission, but in any case shall be kept on file for not less than three years. An employer shall not prohibit an employee from maintaining a personal record of hours worked, or, if paid on a piece-rate basis, piece-rate units earned.