It's hard to say. For most people it would not work out well, unless you're in an occupation where it's easy to find work. As far as unions go, the broader question is whether or not unions are needed these days for the working class to demand change, or whether relying on them is the best strategy. Union leaders undermined the general strike in England in 1926. But unions would be the way to go for non specialized labor. Union membership is low, but that could change the more democracy is undermined, although not enough for the general strike in question.