The paper investigates the link between the over-exposure of African immigrants to unem- ployment in France and their under-representation in jobs in contact with customers. We build a two-sector matching model with ethnic sector-speci-c preferences, economy-wide employer dis- crimination, and customer discrimination in jobs in contact with customers. The outcomes of the model allow us to build a test of ethnic discrimination in general and customer discrimina- tion in particular. We run the test on French individual data in a cross-section of Employment Areas. Our results show that there is customer discrimination in the French labor market for contact jobs ; a decrease in discrimination intensity by one standard deviation would reduce the raw unemployment rate of African immigrants by 4.3 percentage points.