The majority of contractors were unaware of the elements that influence the cost of injuries, the cost of occupational accidents, and the quantity and characteristics of occupational injuries. There was a need to explore the economic costs of occupational injuries in the construction sector by taking cases in Bahir Dar because information on the costs of occupational accidents in the construction sector is sparse. Purposive sampling was used to collect data on work-related injury insurance coverage, insurance compensation payments, and other essential information for 350 injured workers from public and private insurance businesses as well as contractors' data. The data was coded, entered, and analyzed using SPSS software. Injury costs are influenced by several things. In 2018, GC contributed 814,801.40 birr to the direct cost of injuries, 6,728,189 birr to the indirect cost, and 7,539,413.30 birr to the total economic cost, representing for 0.75 percent of the construction sector's annual operating budget. The direct cost of injuries, the indirect cost, and the total economic cost contributed 1,439,324.30, 7,477,679, and 16,439,324.30birr, respectively, accounting for 0.93 percent of the construction sector's annual operating budget in 2019. The direct cost of injuries, the indirect cost, and the total economic cost contributed 7,001,428,761,324.30, and 7,762,752.3birr, respectively, accounting for 1.01 percent of the construction sector's annual operating budget in 2020 GC. The cost of accidents grew by 0.26 percent between 2018 and 2019, resulting in a loss of 31,741,489.90 birr. Construction project should be executed with appropriate care to reduce direct and indirect costs of construction work-related injuries and so as to improve the profitability of the construction. Moreover, further researches should be conducted to evaluate the negative impacts of accident costs on the overall project performance in terms of productivity, time, quality and profit. Further research is also required to develop a cost calculation model for estimating the costs of work-related accidents in Ethiopia, where data from insurance is the best source for accident costs and occupational accidents. Key words: Accidents costs, Bahir Dar, Ethiopia, Occupational accidents, Construction,