This report addresses the regulation of working time in the state run child protection service and the railway companies, two sectors with significant use of shift and rotation. Agreements have been made to deviate from the Working Environment Act in the child protection service as well as in the railway service. The Basic Collective Agreement that covers the state run services is general in its formulations, while the agreements in the railway sector is more detailed and vary according to the different interests present in the companies. Different historical development of the unions and periods with shortage of engine drivers, have, together with different modes of production in the two sectors, influenced the bargaining power of the federations of unions engaged in the state run child protection service and in the railway sector. The outcome has been a different regulation of working time and different compensation for work rotation.