They have flexi- but they also have -security.

> workers might be much happier in countries where they can work without the possibility of being fired at any moment

The reason why this is an issue is nothing to do with actually being fired, it is due to the difficulty of getting rehired...which is a bigger issue if labour markets don't function (and in most European nations, as the higher unemployment has risen, the more desperately the privileged few have clung onto their protections worsening the issue).

This is why Denmark went the other way: the logic for inflexible labour markets is only consistent when labour markets are not flexible. Remove that and target spending where it is actually needed i.e. on meeting the needs of the market.

The idea of stronger safety nets is also not particularly true (the idea of strong/weak never made sense to me). Social security is not universal as in the UK or US, it is based on contributions. And the reasons unions work, again in contrast particularly with the UK, is that they collaborate with employers (Denmark's union participation rate is anomalous but even compared with somewhere like Germany).