Well, the biologist quoted in the story is Danish, so may be starting from different norms. The de-facto minimum wage [1] is already around $18/hr, and would probably increase if the work-week were changed. That could perhaps be funded in part by putting less money towards retirement (current employer contribution is 17% of salary), since his proposal is to raise the retirement age considerably as well. Serf wages are a bit less of an issue in any case when that's the starting point.
[1] A bit complex: "de-facto" because Denmark has no statutory minimum wage. Nonetheless, a negotiated wage floor of a bit above 100 DKK/hr (~$18/hr) covers most workplaces. Denmark's labor system, partly driven by law and partly by cultural norms, makes heavy use of sector-wide bargaining agreements between large employer confederations and large cross-company unions. The whole process tends to be very consensus-oriented (strikes are rare), and reaches blanket agreements that apply sector-wide. Small mom-and-pop stores, freelancers, independent moving-van operators, etc. are the main exceptions, since they aren't part of one of the employer confederations that's party to those agreements.
[1] A bit complex: "de-facto" because Denmark has no statutory minimum wage. Nonetheless, a negotiated wage floor of a bit above 100 DKK/hr (~$18/hr) covers most workplaces. Denmark's labor system, partly driven by law and partly by cultural norms, makes heavy use of sector-wide bargaining agreements between large employer confederations and large cross-company unions. The whole process tends to be very consensus-oriented (strikes are rare), and reaches blanket agreements that apply sector-wide. Small mom-and-pop stores, freelancers, independent moving-van operators, etc. are the main exceptions, since they aren't part of one of the employer confederations that's party to those agreements.