In France, you were counted as "unemployed" if you were registered with the national employment agency and actively looking for employment according to their criteria.
If you didn't find anything (for example because the opportunities on offer were too far away, or various other reasonably human reasons) after a certain time, the agency dropped you, and you were no longer part of the "unemployed" statistic. Unemployment went down!
I've also seen the government there change their criteria for unemployment (for example dropping you after 9 months instead of 12), to make it seem like unemployment went down.
(I'm a big believer in statistics-driven policies, but statistics, like anything involving humans, can be corrupted)