Cal. Labor Code - LAB § 800. Section 800.
Every person operating a sawmill, shakemill, shinglemill, logging camp, planing mill, veneer mill, plywood plant or any other type of plant or mill which processes or manufactures any lumber, lumber products or allied wood products, in this State shall allow his employees a period of not less than one-half hour for the midday meal, between the third and fifth hours of each day’s shift after the start thereof.