The Act of 31 March 2020 amending the Act on special solutions related to the prevention, prevention and combating of COVID-19, other infectious diseases and emergencies caused by them, and some other acts ("special act") introduced changes to the Act on the social insurance system ("USUS"). These changes will enter into force on 1 January 2021.

The changes consist in imposing on the contribution payer or the natural person ordering the work the obligation to inform ZUS about the conclusion of any contract for a specific task, if such a contract is concluded with a person not employed by the contribution payer or if under such a contract the person does not perform work for the employer he has an employment relationship with. This obligation must be performed within 7 days from the date of concluding such a contract for specific work.