Multivariate analysis of unionized employees’ propensity to cross their union’s picket line

Unionized employees who were surveyed concerning a hypothetical strike scenario were asked whether they would cross their union’s picket line during an authorized economic strike. Potential crossovers differed from potential continuing strikers in their support for union representation and in their attitudes about striking and picketing. Compared to potential continuing strikers, potential crossovers made a lower hourly wage, were more willing to find alternate employment during a strike, and were willing to strike fewer weeks. Thus, the NLRB’s no-presumption policy best corresponds to workplace reality.