“…Time periods covered by these studies differ considerably. Many of them cover a relatively short period, such as one year (Deeken & Thomas, 2006;Hosoi, 2000;Lack, 2001), two years (Ellero, 2014;Turner, 2020) or three years (Reeves & Hahn, 2010). However, a few studies have covered ten years or more to track how job requirements have changed over time (Chaudhry & Komathi, 2001;Copeland, 1997;Dieckman, 2018;Hall-Ellis, 2015;Xu, 1996;Zhang, 2008).…”