This is in practice just a deferred salary scheme. Since the mandate attaches an unavoidable additional liability to every year of employment, that will get rolled into the total cost of employment by accountants.

So yes, when you collect the deferred salary it feels generous. But you were getting less salary up until that point in order to make the system solvent.

One may well prefer this arrangement, but one can't evaluate the generosity of the payment without also accounting for the cost that made it possible.