California CodesLAB CodeDivision 1 - DEPARTMENT OF INDUSTRIAL RELATIONSChapter 6.5 - Occupational Safety and Health Appeals Board§ 148.4§ 148.4Added by Stats. 1973, Ch. 993.All decisions and orders of the appeals board shall be in writing.Cite this sectionCal. Lab. Code § 148.4 (2026)Copyhttps://ca.codecond.com/codes/lab/division-1-department-of-industrial-relations/chapter-6-5-occupational-safety-and-health-appeals-board/section-148.4CopyOther sections in Chapter 6.5 - Occupational Safety and Health Appeals Board§ 148§ 148.1§ 148.2§ 148.4§ 148.5§ 148.6§ 148.7§ 148.8§ 148.9§ 149§ 149.5← § 148.2§ 148.5 →