a = lack of training b = lack of care of labour (injured person) c = lack of care of another labour d = unsafe scaffolding, ladder, machines, vehicles e = did not use PPE, f = environmental factor g = lack of site inspection, h = safety symbols are not used i = lack of safety arrangements j = unsafe site planning and layout k = improper labour facilities, l = electrical shock m = failures of structure, n = due to use of alcohol o = other reasons, = number of accidents
I = death of person II = loss of body parts III = body fracture IV = injury to the body V = skin infection VI = deficiencies to ear and eye VII = any other