The reference period corresponds to 12 consecutive monthly observations in the income reference year (January-December of year T-1) plus one additional observation at the moment of the interview (in year T). The threshold is equivalent to Eurostat’s low-work-intensity measure: Above zero but no more than 45% of potential working time in the income reference year. To reconcile information reported for the income reference period and at the moment of the interview the following individuals are also considered in this group: 1) Workers who report no work activity during the income reference period but who are working at the moment of the interview and, 2) workers with between 45% and 50% of work activity during the income reference period who do not report any work activity in either the last month of the income reference period or at the moment of the interview.