An employment contract must comply with a number of legal criteria which lay down the rights and obligations of the employer and employee.
All information about employment contracts can be found in the brochure Wegwijs in de arbeidsovereenkomst (.pdf) (Guide to employment contracts), published by the Federal Public Service Employment, Labour and Social Dialogue.
The website of 1819.brussels also provides detailed information about the different types of employment contracts, the duration and scope of employment within an employment contract.