1. International Labour Organization (ILO): Decent work indicators: concepts and definitions. ILO, Geneva, 2012.
2. Organisation for Economic Cooperation and Development (OECD): OECD employment outlook 2019: the future of work. OECD Publishing, Paris, 2019.
3. You JW, Song IH: The effects of quality of employment on the depressive mood among paid workers: an analysis of the mediating effect of perceived economic status. Ment Health Soc Work 44: 106-133, 2016.