We suggest that you analyse the current legislative or case law on issues of equality and discrimination in employment. If French law rigorously ensures equality between citizens, it is conceivable that paid employment is an area of election to measure the practical application of the principle. Moreover, it is likely that if the list of grounds for discrimination continues to grow, this is first and foremost in order to meet the demands of society. More generally, the development of equality is explained by the desire to know and understand the reality of the distinction made. Finally, this chronology will make it possible not only to better understand the applicable rules and the boundaries between the permit and the ban, but also to measure the reception of texts by judges.