The link between the challenges of industrial revolutions and the business responses to them in the field of labor safety is shown in the article. Description of the four stages of labor safety development and brief information about the classes of tasks to be resolved at individual stages are given. In particular, the class of tasks of the first stage is associated with the search for engineering and technical solutions of ensuring safety, the second stage — with the search for administrative and organizational solutions. Theoretically, the results of the first two stages allow to achieve the required level of safety, but in practice this does not take place. The main reason is the person and his unsafe behavior. This reason has initiated an emergence of the third stage — the stage of behavioral safety («Occupational safety 3.0»), which takes place at present. The class of tasks of to be resolved at the third stage should be based on the system approach to managing safe human behavior based on the fact that the employee recognizes personal values and goals, ways and means of their achievement and coordination (harmonization) with the goals and objectives of the enterprise. As such an approach the Personal System of Conscious Labor Safety is considered, which proposes the new strategy for improving the human safety culture.
The description is given concerning the causes of the fourth stage emergence — the stage of intellectual safety systems («Occupational safety 4.0») and the class of the tasks to be resolved at this stage. Preliminary assessment of its beginning is provided.
It is shown that each of these stages is aimed at reducing injury and accident rates to a certain level, and cumulatively they allow to reduce known risks to almost zero values.