Cal. Unemp. Ins. Code § 2658
Notwithstanding any inconsistent provisions in this part, except as provided in subdivision (b) of Section 2611, in determining the benefit rights of any person who was involved in a trade dispute during the disability base period, as determined pursuant to Section 2610, there shall be excluded from the disability base period those quarters during which the person performed no services in employment for 60 days or more as a result of a trade dispute. For all quarters so excluded there shall be substituted an equal number of quarters immediately preceding the commencement of the trade dispute. In the event the disability base period so determined includes wages in calendar quarters for which the records have been destroyed under proper approval, a claimant may establish the amount of wages by affidavit in accordance with authorized regulations. The quarter of commencement of the trade dispute shall be counted as a completed quarter if the director finds that the inclusion thereof would be more equitable to the claimant.
Ca. Unemp. Ins. Code § 2658