Some observers lately have blamed the problem on structural factors -- there's a mismatch, they say, between the types of jobs available in a given location, and the types of skills that workers have. That's a problem that only long-term retraining efforts can likely fix.
The article starts to hint at the correct diagnosis, but then drops it to jump on a pro-union bandwagon. That's a disingenuous revelation of bias, made all the more evident by later references to pro-union policies in other countries. The problem in America is locational mismatches between available jobs and available skills, not lack of union bargaining power.
American workers are among the most highly skilled in the world. Labor mobility makes our workforce flexible, but that's hindered when workers are tied to heavily-mortgaged homes that they can't leave without suffering major losses. The subprime lending debacle is still hurting workers' chances to move to where they can fill appropriate jobs. That is not something that labor unions can fix through collective bargaining or more legal rights.
The solution is to let foreclosures run their course. Workers who no longer have an economic incentive to stay in a distressed neighborhood can move to find new work.