DEFINITION: Part-time employment refers to persons who usually work less than 30 hours per week in their main job. Both employees and the self-employed may be part-time workers. Employment is generally measured through household labour force surveys and, according to the ILO Guidelines, employed persons are defined as those aged 15 or over who report that they have worked in gainful employment for at least one hour in the previous week. The rates shown here refer to the numbers of persons who usually work less than 30 hours per week as a percentage of the total number of those in employment. Figures expressed per million population for the same year.