The fast-food and hospitality industry provided work for slaves and women of the lower classes who were poor or had to earn a living for their birth or marriage families. While prostitution was more lucrative than waitressing or shopkeeping, social and legal penalties encouraged practitioners to hide behind these businesses. Graffiti and later legal codes (see Digesta) make it clear that thermopolia and cauponae (taverns and inns) became fronts for prostitution or were believed to be in the flesh trade. A woman who practiced prostitution or employed prostitutes automatically incurred infamia (loss of reputation and some legal rights); free-born Roman citizens were not allowed to contract a fully valid marriage with her, though a freedman could if she retired from prostitution. If she was married when she began to practice prostitution, she was considered an adulteress, and her husband had to divorce her or incur infamia for acting as a pimp. Augustus' Lex Iulia de Maritandis forbade members of a senatorial family from marrying freedwomen, actresses, prostitutes, madams, or adulterers; however, it is probable that the law would be invoked primarily against the elite rather than someone of the lower classes.