Skip to Main Content

This information is provided free of charge by the Department of Industrial Relations from its web site at These regulations are for the convenience of the user and no representation or warranty is made that the information is current or accurate. See full disclaimer at
Subchapter 7. General Industry Safety Orders
Group 2. Safe Practices and Personal Protection
Article 11. Outdoor Advertising Structures
Return to index
New query

§3413. Ladders.

(a) All portable ladders shall be at least Type 1 industrial heavy-duty ladders, Type 1A industrial extra heavy-duty ladders or Type 1AA special duty ladders as referred to in subsection (c) of this section, and shall be designed and constructed in accordance with Section 3276(c) of the General Industry Safety Orders.

(b) Portable ladders shall be tied, blocked or otherwise secured to prevent displacement.

(c) All special purpose poster ladders ordered or purchased after January 1, 1993, shall be approved, Type 1 industrial heavy-duty, Type 1A industrial extra heavy duty ladders or Type 1AA special duty ladders equipped with a hook(s) at the top of the ladder that fits securely over the top edge of billboards.

(d) All special purpose poster ladders ordered or purchased after January 1, 1993, shall have a permanent and durable label containing the following information:

1. Manufacturer's Name;

2. Date of Manufacturer;

3. Type and/or Duty Rating;

4. Approval Certification.

(e) All special purpose poster ladders shall be inspected for defects prior to use. Defective ladders shall be repaired before use or removed from service.

(f) All special purpose poster ladders placed in service prior to January 1, 1993, shall be identified by the employer with a durable identification mark.

(g) The hooks on the special purpose poster ladders shall be of such a size that they will not interfere with the horizontal movement of the ladder.

(h) In addition to subsection (b) above, special purpose poster ladders, when used in conjunction with poster ladder scaffolds, shall be secured to prevent horizontal movement.

(i) Special purpose poster ladders used to access the fixed ladder of the billboard platform shall not be attached to the bottom rung of the fixed ladder. If a special purpose poster ladder is positioned against the platform to gain access, the ladder shall extend at least three feet above the horizontal edge of the platform.

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.


1. New section filed 1-7-93; operative 1-7-93 pursuant to Government Code section 11346.2(d) (Register 93, No. 2).

2. Amendment of subsections (a) and (c) filed 10-1-2008; operative 10-31-2008 (Register 2008, No. 40).

3. Amendment of subsection (a) filed 12-8-2010; operative 1-7-2011 (Register 2010, No. 50).

Go BackGo Back to Article 11 Table of Contents