This. In Germany there have been and still are plenty of layoffs happening, most at jobs part of strong unions like the auto industry. Strong unions just means better severance packages than those not in unions when you get laid off, not that you're protected from ever being laid off. To me that's a pretty fair balance IMHO.
IIRC, only in France unions can prevent companies from doing redundancies if their bottom line looks good, but that's probably also why many companies aren't hiring much in France to begin with, why skilled wages are lower and youth unemployment higher there compared to other equally developed economies like Netherlands or Germany for example.