“…They also suggest that full-time and part-time workers are not perfectly substitutable due to the nature of their work, and that retailers tend to choose the latter over the former when minimum wages increase. While full-time workers fulfill higher-skill tasks such as the procurement of goods and services, planning of sales strategies, scheduling staff, as well as contributing to store operations, part-time workers mainly serve as sales staff members supporting full-time workers and supporting longer store hours (Thurik and Van der Wijst, 1984;Wotruba, 1990;Tilly, 1991;Künn-Nelen, De Grip, and Fouarge, 2013;Garnero, Kampelmann, and Rycx, 2014;Hirsch, 2005;Owen, 2015). It may be the case that their major concern is not a long-run decrease in human capital due to less full-time employees (Hirsch, 2005), but a short-run decrease in sales due to less part-time employees (Künn-Nelen, De Grip, and Fouarge, 2013).…”