Ensure as mentioned in the second subsection, literas b and c, means that the principal undertaking has a coordination responsibility for the mentioned circumstances. This is a continuation of current law under the Working Environment Act. The duty to ensure in litera d entails e.g. that offences as mentioned in litera d shall be pointed out and corrected if the principle undertaking is aware of them. The duty can be fulfilled through inspections at the workplace.
Source: Guidelines Regarding the Framework Regulations, Norway, updated December 2012. Regulatory Guidance