Chapter 4 - Division of Industrial Safety
- Subchapter 1 - Unfired Pressure Vessel Safety Orders (§§ 450 — 560)
- Subchapter 2 - Boiler and Fired Pressure Vessel Safety Orders (§§ 750 — 797)
- Subchapter 3 - Compressed Air Safety Orders (Governing Work in Compressed Air) [Repealed] (§§ 1200 — 1280)
- Subchapter 4 - Construction Safety Orders (§§ 1500 — 1962)
- Subchapter 5 - Electrical Safety Orders (§§ 2299 — 2989.1)
- Subchapter 6 - Elevator Safety Orders (§§ 3000 — 3146)
- Subchapter 6.1 - Passenger Tramway Safety Orders (§§ 3150 — 3191)
- Subchapter 6.2 - Permanent Amusement Ride Safety Orders (§§ 3195.1 — 3195.14)
- Subchapter 7 - General Industry Safety Orders (§§ 3200 — 6184)
- Subchapter 8 - Safety Rules for Gold Dredges [Repealed]
- Subchapter 9 - Lamp Scaffold and Parallel Safety Orders [Repealed]
- Subchapter 10 - Liquefied Petroleum Gases Safety Orders [Repealed]
- Subchapter 11 - Logging and Sawmill Safety Orders [Repealed]
- Subchapter 12 - Mine Safety Orders [Repealed]
- Subchapter 13 - Logging and Sawmill Safety Orders (§§ 6248 — 6402)
- Subchapter 14 - Petroleum Safety Orders-Drilling and Production (§§ 6500 — 6692)
- Subchapter 15 - Petroleum Safety Orders-Refining, Transportation and Handling (§§ 6750 — 6896)
- Subchapter 17 - Mine Safety Orders (§§ 6950 — 7183)
- Subchapter 18 - Ship Building, Ship Repairing and Ship Breaking Safety Orders (§§ 8345 — 8399)
- Subchapter 19 - Trench Construction Safety Orders [Repealed]
- Subchapter 20 - Tunnel Safety Orders (§§ 8400 — 8568)
- Subchapter 21 - Telecommunication Safety Orders (§§ 8600 — 8618)