Job security declining for people in unions

Economist Allison Schrager points out a little-noticed shift in the workforce that explains part of the membership problem Big Labor is facing: Union members are now experiencing declining job security.

This is notable because job security is a key benefit to joining a union in the first place. Unions are supposed to pressure companies to preserve positions, even in hard times. But even union-dominated industries have seen mass layoffs in recent decades.