Inland Trucking Co. v. N.L.R.B

In Inland Trucking Co. v. NLRB, 440 F.2d 562, 565 (7th Cir. 1971), the Seventh Circuit held that a bargaining "lockout... accompanied by continued operation with [temporary] replacement labor, is per se, an interference with protected employee rights, and, accordingly, per se, an unfair labor practice."