All Danish employers are obligated by law to provide you with an employment contract. You are entitled to a contract if you are under employment for at least a month and more than eight hours per week. The contract describes the specific conditions of your employment.
If the general terms of your employment are regulated by a collective agreement, the employment contract will typically include a reference to this specific agreement.
You can read more about the required information for an employment contract as well as other useful information about working conditions at lifeindenmark.dk.
Go to lifeindenmark.dk (new tab).