Which of the following practices is NOT recommended when using ladders?

Carrying tools in your hands while using a ladder is not recommended because it compromises the ability to maintain three points of contact. This practice increases the risk of losing balance and potentially falling, as one hand is needed to grip the ladder securely. The safest way to work from a ladder is to keep both hands free to ensure maximal stability and control when climbing or descending. Instead of carrying tools, it's advised to use tool belts or a hoist system to transport tools, allowing the user to maintain focus on their ascent or descent without the added risk of juggling tools.

Maintaining three-point contact, positioning the ladder on stable ground, and avoiding using the ladder as a scaffold are all practices that promote safety and minimize the risk of accidents while working on ladders.