Employers must provide employees with an employment contract outlining the terms of employment. The employer must state, among other things, what you have agreed on with regard to pay, place of work, weekly hours, start of the employment relationship, holiday, periods of notice and the length of the employment relationship (if it is time limited).
In general, foreign workers in Denmark are covered by the same rules and agreements that apply to Danes.
Even if there is no statutory provision on what constitutes normal weekly hours, the normal working week in Denmark is 37 hours according to most collective agreements. The majority of people work from Monday up to and including Friday in the period between 7 a.m. and 6 p.m. If you work less than normal weekly hours, then it is a case of reduced hours or part-time work.