Summary : In the Lot-et-Garonne department, the use of foreign seasonal workers – mainly Polish people – to meet the agricultural needs is widespread. For employers, they are a labor hardworking and flexible, unlike local job seekers. A priori, interests converge as foreign workers are particularly attracted by the level of French wages. Yet the relations of domination and exploitation are structurally present in both speech and in institutional forms taken by employment relationship. This allows and encourages abuse, especially since denunciations are few.