Indirect costs are considered to be costs related to the lost opportunities for the injured employee, the employer, the co-workers, and the community. [...] Human costs relate to the value of the change in the quality of life of the worker and the people around him1. [...] Data availability and the reason why the costs of occupational injuries and data availability are being estimated are both factors that will influence the choice of the method to be used and of the cost components to be considered. [...] To assist the IRSST in choosing the most appropriate methods, this report provides a detailed overview of the state of knowledge regarding the evaluation of the costs of occupational injuries. [...] Estimating the incidence of the costs of occupational injuries involves taking the new injuries that occur during a specific year and estimating the total costs of the injuries irrespective of whether they are spread over one or more years.