From Inclusion and CEPR, a great report on how unions can raise incomes and benefits for low-wage workers. Unionized workers in low-wage jobs made 16 percent more than non-unionized workers, and were 25 percent more likely to get health insurance, and 25 percent more likely to get a pension. And that matters a lot:
These union effects are large by any measure. To put these findings into perspective, between 1996
and 2000, a period of sustained, low unemployment that helped to produce the best wage growth