It does as far as I know. But if one is self employed versus working for a conpany, then you could technically just leave. On the other hand, sometimes people get caught in a tax problem. I focus on taxes because just relinquishing your residence card is very simple and can be done by checking a box on the customs form. Many have problems when they just exit and fail to take care of their tax obligations. And when they least expect it, they get detained at the airport. But my general understanding is that changing your status isn’t even all that difficult, especially in this case.