The Labour Act of the Czech Republic recognised two types of agreements:
Work performance agreement – can be concluded with a natural person, provided that the scope of work does not exceed 300 hours in a calendar year.
Agreement on working activity – can be concluded only for a work activity not exceeding 20 hours weekly on average. See the template here we have prepared for you.
Both agreements must include information on the time period they are concluded for, whilst the period of time can be fixed or indefinite.
In Slovakia, there is a different regulation.