If this is to be interpreted as evidence that the workers have bargaining power, it is only the first step in a progression of improving conditions (because now they're able to negotiate.) If it's just PR-driven serendipity then it might even be accompanied by worsening conditions elsewhere. This seems reasonable because people are a lot more reliable at fighting for their own interests than they are at considering the interests of others.

I'm assuming it relates to the tight labor market giving workers the power to choose where they work at (as opposed to "this is the only job offer I have")