Interboro Doctrine

Interboro Doctrine

Definition

A rule applied in labor-law cases to determine whether a single employee acting alone is nonetheless engaging in concerted activity protected under the National Labor Relations Act. The Interboro doctrine treats an individual employee who asserts a right the employee reasonably and honestly believes is protected under the terms of a collective-bargaining agreement as engaging in concerted activity, even if that belief is incorrect. The Supreme Court established the doctrine in Interboro Contractors, Inc., 157 N.L.R.B. 1295 (1966).

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