I don't think this makes a lot of sense. Poverty line is defined as < 60% of median income. Median income in France is heavily influenced by the minimum wage income. As a consequence, anyone working part time will be considered under the poverty line.

And in France, making less than 60% of median wage certainly doesn't make you rich, but you still get access to basic need (healthcare, even housing in some cases).

I'd rather be piss-poor in France than in the US.