Switzerland uses migrants to absorb shocks, basically.
Lewis, I'm not sure what you mean exactly. Of course, all employment rates should be re-calculated to full-time equivalents. I guess average hours worked would be even better.
Yah, what I meant is: the trick behind Germany's massive reductions in unemployment rates is forcing unemployed people (that don't seem likely to find a real job without government help that isn't given) into miserly paid silly activities for a few hours, supplementing their income with welfare o/c.
Rather than the time-honored trick of just considering the unemployable as not looking for work at all, and therefore not unemployed. So you'd see a corresponding rise in numbers employed, if you define employed as doing any kind of paid work at all.
If you recalculate to average hours, much of the change disappears.