When using ladders, it's crucial to follow specific safety guidelines to prevent accidents and ensure a safe working environment. Here are some key ladder safety practices based on the provided documents:

1. Securing Ladders: Ensure that portable ladders are secured against accidental movement during use. This can be achieved by securing the ladder at the top to a rigid support that will not deflect, especially if the ladder cannot extend 3 feet above the landing surface [1].

2. Ladder Placement: Place ladders at the correct angle. For non-self-supporting ladders, the horizontal distance from the top support to the foot of the ladder should be approximately one-quarter of the working length of the ladder [2].

3. Extension Above Landing: Ladders used for access to an upper landing surface should extend at least 1 meter above the landing [1].

4. Load Capacity: Do not load ladders beyond their maximum intended load or the manufacturer's rated capacity [2].

5. Surface Conditions: Use ladders only on stable and level surfaces unless they are secured to prevent accidental displacement. Avoid using ladders on slippery surfaces unless they are secured or equipped with slip-resistant feet [2].

6. Inspection and Maintenance: Ladders should be inspected before each use and maintained in a safe condition. Any ladder with structural defects should be tagged as "Do Not Use" and removed from service until repaired [3].

7. Climbing and Descending: Always face the ladder when climbing or descending and maintain a three-point contact (two hands and a foot, or two feet and a hand) at all times [3].

8. Prohibited Practices: Do not use the top two rungs of a ladder unless it is a stepladder with a platform and handrail. Also, do not carry objects that could cause you to lose balance while climbing [1].

By adhering to these guidelines, you can significantly reduce the risk of ladder-related accidents in the workplace.