Well like I said, I'm hardly holding up the UK as an example. In fact the real unemployment rate in the UK, while probably still (slightly) lower than France's, is much higher than the official figure when you consider that it only counts people claiming JSA, so it leaves out people who've been kicked off the dole or have given up trying to claim it, e.g. adults who've moved back in with their parents or are being supported by a partner, to say nothing of homeless people, and it doesn't even count people on at least some kinds of workfare schemes, I think.
Add to that all the underemployed people - those doing part-time work who'd prefer to work full time, on zero-hour contracts or in a state of bullshit 'self-employment' in the 'gig economy' but with little actual work to do, or enrolled in mickey-mouse courses in the vague hope of improving their prospects - and you're looking at many millions of working-age adults without anything that can be called a proper job.