What is the action called when a single union attempts to shut down an entire construction site?

The action where a single union seeks to shut down an entire construction site is referred to as common situs picketing. This term specifically describes a situation where multiple employers are present on a single site, and a union targets all of them by picketing in order to negotiate or protest for better working conditions or wages. This type of picketing can be particularly effective because it places pressure not just on one employer, but on everyone involved in the construction project.

The ability to engage in common situs picketing is rooted in labor law, which balances the rights of unions to organize and engage in collective bargaining with the rights of employers to conduct their business. As a result, this tactic is often employed in construction industries, where multiple contractors might work on the same job site. This makes the term relevant and appropriate within the context of labor relations.

Other options refer to different concepts within labor law and practices but do not correctly describe the specific action of shutting down an entire construction site by a single union.