The scope of this European Standard is to provide a general procedure in order to assess workers’ exposure to electric, magnetic and electromagnetic fields in a work place to demonstrate compliance with exposure limit values and action values as stated in the Council and European Parliament Directive 2004/40/EC. The purpose of this European Standard is to - specify how to perform an initial assessment of the levels of workers' exposure to electromagnetic fields (EMF), if necessary including specific exposure assessment of such levels by measurements and/or calculations, - determine whether it is necessary to carry out a detailed risk assessment of EMF exposure. This European Standard can be used by employers for the risk assessment and, where required, measurement and/or calculation of the exposure of workers. Based on specific workplace standards it can be determined whether preventive measures/actions must be taken to comply with the provisions of the Directive. The frequencies covered are from 0 Hz to 300 GHz.