Cal. Lab. Code § 218.9
(a)
(3) The direct contractor’s liability under this section shall extend to penalties and liquidated damages only as follows:
If a worker employed by a subcontractor on a private construction project is not paid the wage, fringe or other benefit payment or contribution owed by the subcontractor on account of the worker’s performance of labor on that project, the direct contractor of the project is not liable for any associated penalties or liquidated damages under paragraph (2) unless the direct contractor had knowledge of the subcontractor’s failure to pay the specified wage, fringe or other benefit payment or contribution, or the direct contractor fails to comply with all of the following requirements:
(b)
(1)
(3)
(8)
(B) If a direct contractor has been provided documentation that the subcontractor has been notified by the trust, plan, fund, or program that the subcontractor has failed to make timely required contribution payments for a private construction project, the direct contractor may make the contribution payments for performance of labor for that project in compliance with all of the following:
(d) An action brought pursuant to this section shall be filed within one year of the earliest of the following:
(f)
(g) For purposes of this section, the following definitions apply: