The construction industry has always been considered as one of the most hazardous industries globally. The condition is worse in developing countries due to poor implementation of safety management. To overcome this problem, there is a need to focus on improving the implementation of safety programs. This paper aims to identify the factors that have the potential to influence the implementation of safety programs in construction projects in developing countries. An extensive review of literature found 21 critical success factors. Sixteen semi-structured interviews with experts in the Iraqi construction industry was conducted to gain in-depth insight and understanding of these factors. The interviewees confirmed the relevance of the success factors and emphasized on the importance of several factors, including management commitment, safety training, the enforcement of safety rules and regulations, and stakeholder collaboration. Technology is a new factor identified by the interviewees. The findings can used in the Iraqi construction industries and in developing countries to support the implementation of safety programs. © Published under licence by IOP Publishing Ltd.