I receive compensation from a nursing home in the Netherlands and secretly work without their knowledge, even though I am not ill, knowing that the law is strict and they do not provide services to foreigners. What should I do?

If the elderly care home provides salaries only to the disabled and unemployed, then it is not permissible for you to take money from it as long as you are working and earning. You must inform them of your situation to avoid taking money unlawfully.