I used to go to Life drawing classes in Dublin and know how difficult it is to hold a naked pose for 30mins. So i always gave the models a tip afterwards (as well as paying the standard fee).
But now the Paris city hall, which runs an array of life-drawing classes, banned the tradition of the "cornet", a piece of art paper rolled into a cone and passed round for tips as a model gets dressed after class. Surviving on the minimum wage with no fixed contracts, holiday pay, security cover or job security, the crash-strapped models said the tips allowed them to survive.
So the models held a naked protest!