Outline a hierarchy of measures to be constered when a construction worker is likely to fall while working at height.?

A hierarchy of measures to be followed while working at height to prevent falls from occurring are as follows:

• Avoid working at height if, possible.
• Provide a properly constructed working platform, complete with toe boards and guard rails;
• if this is not practicable or where the work is of short duration, suspension equipment should be used;
• collective fall arrest equipment should be used;
• where this is not practicable individual fall restrainers (safety harness) should be used;
• only when none of the above measures is practicable, should ladders or stepladders be considered.