Offence that involves demanding or requesting sexual favours (from touching to full intercourse) in work, teaching or other contexts, and is inflicted on a person in a situation of intimidation, hostility, discomfort or humiliation. Harassment can be verbal or non-verbal. In Spain, it was included in the Penal Code in 1995. Catharine MacKinnon’s book Sexual Harassment of Working Women (1979) was key to the criminalization of the offence.