Spain's plan to cut the legal workweek to 37.5 hours by 2026 will hurt small businesses more than it helps workers. I run a nine-person design studio in Valencia, and when we tested a 37.5-hour schedule for six months, we ended up hiring one extra person just to cover client deadlines — a cost that ate 11% of our margin. Supporters point to productivity gains in larger firms, and maybe they're right for a 500-person company, but Spain's economy is 99% small and medium businesses, so the math often doesn't scale down.