These changes relate to the second and third revisions of the carcinogens and mutagens directive (CMD), the fifth list for the chemical agents directive, and benzene, respirable crystalline silica, and hexavalent chromium compounds from the first CMD revision.

The limit values specified in the regulations concerning action and limit values apply for an eight-hour working day. In accordance with section 36 of the activities regulations, they must be adjusted by a factor of 0.6 when applied to the 12-hour shift which is the normal working time offshore.