California Code, Unemployment Insurance Code - UIC § 3654.1

(a) For the purpose of determining whether an unemployed individual meets the eligibility requirements of subdivision (e) of Section 3552, the director may pursuant to his authorized regulations require that wage and employment information shall be submitted to the director, within 10 days after the mailing of a request by the director, by any or all of the following:

(b) The 10-day period may be extended for good cause.