Make sure the steps or rungs are sturdy and the locking mechanisms are in good working order. Maintain ladders free of oil, grease, and other hazards. Carry ladders horizontally with the front end slightly higher than the back end. To open a stepladder, make sure the spreader is locked and the pail shelf is in position. To open an extension ladder, brace the bottom end and push the rungs or rails up.
Place ladders on a solid, level surface to ensure safety.
To prevent ladders from sinking into soft ground, use a large board or similar object under the feet of the ladder Watch for overhead obstructions and powerlines. Do not place the top of a ladder against a window or an uneven surface. When possible, tie the top of a straight or extension ladder to supports. An extension ladder used for access to a roof or elevated work platform, must extend at least 3 feet beyond the support point. Do not place a ladder in front of a door unless you barricade and post a warning sign on the opposite side of the door.