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‪This paper shows how the establishment of a profit-sharing mechanism for PTT agents when selling financial products is not a wholly new management device. On the contrary, one can distinguish three uses of commissions in the two decades studied here. The payment of commissions has transformed the professional practices of agents and rewarded personal investment. By introducing an objective measure of sales, it has offered career progression opportunities for the best salespeople. However, this mechanism has also been misused or changed the relationships of financial advisors to their colleagues and superiors within the post office. Lastly, it has been the topic of collective regulations, from which it has emerged that the problem is less the individualization of earnings, or what this pertains to, than the transformation of power relations between the different occupational groups who have successively benefited from the commission payment system.‪