• Overexertion — too much lifting, pushing, pulling, holding, carrying or throwing of an object

• Falls on the same level

• Bending, climbing, loss of balance, slipping without falling

• Falls to a lower level

• Struck by an object — tool falls on a worker’s head, etc.

• Repetitive motion

• Highway crashes

• Struck against an object — carpenter walks into a door frame, etc.

• Caught in or compressed by equipment

• Temperature extremes — leading to heat exhaustion, frost bite, burns, etc.

Source: Liberty Mutual Workplace Safety Index, which ranks causes based on directly-related workers’ comp costs.