“…Second, in focusing on these five skill domains, we provide first-time evidence on wage differences due to mismatches in ICT, science, and reasoning, all of which are of critical importance to working in a modern economy and are assumed to be highly relevant for individuals' labour market success and wages (Bol & Heisig, 2021;Falck et al, 2021;Heineck & Anger, 2010;Light & Rama, 2019). Based on PIAAC data, Fregin et al (2019) have provided initial insights into wage effects resulting from skill mismatches in digital problem-solving skills, showing wage penalties for underskilled workers and wage benefits for overskilled workers in comparison to matched workers with the same occupational requirements. However, the PIAAC measurement of problem-solving in technology-rich environments comes with limitations and the definition is conceptually ambiguous, as it neither provides a clear-cut ICT skill nor a test of problem-solving (OECD, 2012).…”