Cal. Lab. Code § 270.5
(a) No person, agent or officer thereof, or logging contractor, or sawmill operations contractor, engaged in the business of logging or operating a sawmill for converting logs into lumber, except in the case of logging or sawmill operations of persons having a free and unencumbered title to the fee of real property in this state, of a market value sufficient to pay the wages of every person employed in connection with such operations in any period for which a single payment of wages is made, shall fail or neglect, before commencing work in any period for which such single payment of wages is made, or for four calendar weeks, whichever is the longer, to do one of the following: