There are four ways of ending employment:

1. With the agreement of both parties
2. A declaration by either the employer or the employee, observing the appropriate notice period
3. A declaration by either the employer or the employee, without following the proper notice period
4. After the expiry of the contract term (for probationary or fixed-term contracts)

Once employment ends, the employer must issue a Certificate of Employment to the employee and deregister them from the Social Security Authority (ZUS). The final payment is due in the next pay cycle, as usual.

Terminating an indefinite period employment contract with notice must state the valid reasons for ending it and is subject to trade union control (if the employee is covered by trade union protection).