Twenty-five hours a week at what rate of pay? There are people working at Walmart and such who make in a week what I would make in a day or two in past years. I also did 60-80 hour weeks in my life (eejit that I was). With all the opposition towards a living wage (read: serf wages), I'll file this under the category that includes jetpacks and flying cars -- and I'd bet on those appearing first.
[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.