When using a ladder, what should be avoided regarding the number of users?

When using a ladder, climbing with more than one person should be avoided because it can significantly increase the risk of accidents and falls. Ladders are designed to support a single user at a time, and the additional weight or movement of another person can create instability. Each individual's actions can interfere with the balance of the ladder, leading to a higher chance of tipping or slipping. The design and structure of ladders typically take into account the weight and dynamics of one person; exceeding this by adding another user compromises safety. This practice can lead to serious injuries for those using the ladder as well as for others in the vicinity.

Other factors for ladder safety include adhering to the established weight limit and using appropriate tools while climbing, which are also important to consider, but the specific issue of having more than one person on a ladder directly impacts its stability and safety.