Cal. Code Regs. tit. 8, § 3287
(a) Use and Application.
(3) All ladders shall be used at such a pitch that the horizontal distance from the top support to the foot of the ladder is one-quarter the assembled length of the ladder (i.e., the length along the ladder between the foot and the top support).
Note: Nonslip bases are not intended as a substitute for care in safely placing, lashing or holding a ladder that is being used on oily, metal, concrete or slippery surfaces.
(11) The use of ladders with hooks attached, to be hung on or over a parapet wall or other projection, shall not be permitted in window cleaning.
(B) Stepladders. Employees shall not sit, kneel, step or, stand on the pail shelf, topcap or the step below the topcap of a stepladder.
Exception: Employees may stand on the step below the topcap provided it is located 18 inches under the topcap.
Note: Tops of self supporting ladders shall not be considered as a rung.
(12)(A) No employee shall be permitted to stand on or work from the top 3 rungs of a ladder unless there are structural members that provide a firm handhold or the employee is protected from falling by a personal fall protection system (e.g., positioning device or fall restraint system) in accordance with the requirements of Section 1670 of the Construction Safety Orders.
(b) Specifications.
(1) Portable ladders shall comply with Section 3276 of the General Industry Safety Orders.
Exception: Refer to Section 3287(a)(1) for maximum length.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
1. Editorial correction filed 10-7-83; effective thirtieth day thereafter (Register 83, No. 41).
2. Amendment of subsections (a)(5), (a)(11) and new subsection (a)(14) filed 9-12-85; effective thirtieth day thereafter (Register 85, No. 37).
3. Amendment of subsections (b)(1) and (b)(2), renumbering of subsection (b)(3) to subsection (b)(4), and new subsection (b)(3) filed 3-9-93; operative 4-8-93 (Register 93, No. 11).
4. Redesignation and amendment of former subsection (a)(12) to subsection (a)(12)(A) and new subsection (a)(12)(B) filed 3-31-2000; operative 4-30-2000 (Register 2000, No. 13).
5. Amendment of subsection (b)(1), repealer of subsections (b)(2)-(3) and subsection renumbering filed 12-8-2010; operative 1-7-2011 (Register 2010, No. 50).
6. Amendment of subsection (a)(12)(B) and new Exception filed 12-29-2011; operative 1-28-2012 (Register 2011, No. 52).