This paper tests the impact of competition on the hiring process in the French retail sector. Following the Becker's theory, higher the competition, lower is discrimination. Using local Herfindhal-Hirschman indexes, a correspondence study ensures to observe how competition affects discrimination. A strong employment gap is observable between French natives and second generation immigrants. Concerning gender, women are favored as cashiers. The impact of competition depends on the target population : competition reinforces preference for women, whereas discrimination due to origin is follows the Becker's theory. However, increasing competition to fight against discrimination is not a solution, as it will enhance bad condition of women in the labor market and an increase of awareness of human resources department to equality of treatment is more efficient.