Accident at workplaces can result injuries, loss of life and properties damage. Both the person involved in accident and the employer may lose their income or profit due to extra costs incurred and increasing of various types of expenses in company operation. Accident costs normally are higher than most people expected because of the indirect cost or hidden costs incurred. These costs should be avoided by reducing accident rates through implementation of an effective safety and health program in preventing accident in the workplace. Other benefits include reduced absenteeism, lower turnover and higher productivity of the company. Estimates of the costs to employers could, therefore, motivate and increase their awareness to act and to reduce accident rate. For this reason, DOSH developed this calculator to assist employer to estimate the accident costs and also to increase awareness of the costs to employers of workplace.