Our analysis is based on the French DARES Working Conditions survey which contains a very large sample of individuals representative of the French working population. We demonstrate that employees working in the cleaning sector report significantly higher levels of satisfaction than the other employees. This statistical result is robust; it persists when we introduce a large number of control variables. This result is puzzling insofar as it is generally agreed that these workers hold ‘poor quality’ jobs: low pay, an abnormal pattern of work, arduous working conditions. We suggest that cleaners’ expectations and standards are influenced by an adaptation process. Their job satisfaction needs to be considered in the light of their past experience. Their employment history shapes their wants and needs and thus affects the way they evaluate their work.