Yes, I believe you're correct, it's just not completely universal subject to individual negotiations. That was part of the problem in the NFL lockout. With most (if not all) of their players being on in-season only pay plans and with most of them also not exactly living, let's put it kindly here, save-it-for-rainy-day life-styles, the owners were able to (correctly) bet on the fact that the players were much more likely to cave the minute those anticipated paychecks (the first ones in six months) began to be missed or even delayed.