Cihon/Castagnera, Employment and Labor Law, 9e Instructor’s Manual Chapter 16
Section 8(b)(4): Secondary Boycotts
Ambulatory situs picketing: Union picketing that follows the primary employer’s mobile business.
CASE 16.4 SAILORS’ UNION OF THE PACIFIC AND MOORE DRY DOCK CO.
92 NLRB 547 (NLRB, 1950)
Facts: A shipping company contracted with a gypsum company to ship gypsum from Mexico. The
shipping company replaced the gypsum company’s crew with a foreign one. The union wanted to picket
at the docks but was denied. The union then picketed at the entrances. The signs indicated that the
disagreement was with the ship and not the dock company. The dock company filed against the union
alleging that they were in violation.
Issue: Does picketing directed against the primary employer, but taking place at a secondary location,
violate Section 8(b)(4)(B)?
Reserved Gate Picketing: Secondary Employees at the Primary Site
CASE 16.5 LOCAL 761, INTERNATIONAL UNION OF ELECTRICAL RADIO &
MACHINEWORKERS [GENERAL ELECTRIC] V. NLRB
366 U.S. 667 (1961)
Background: The GE factory has five “gates” used to enter the factory compound. One gate was
specifically reserved for employees of contractors, and GE employees were not allowed to use that gate.
The union representing the GE employees went on strike and placed pickets at all five gates. Because of
the pickets, almost all of the contractor employees refused to enter the company premises. GE filed a
complaint with the NLRB alleging that the union violated the act by picketing at the gate where only
contractors were allowed to enter. The ALJ dismissed the complaint reasoning that the picketing at that
particular gate was primary in nature. The Board reversed and held that because the gate was exclusively
reserved for independent contractors the union’s picketing was with intent to encourage those contractors
to cease doing business with the company, in violation of the act. The appellate court affirmed the
Board’s decision and the Union appealed.
Issue: Does the union picketing at the gate used only by the employees of the contractors violate Section
8(b)(4)(ii)(B)?
Decision: It depends on whether the contractors performed work necessary to the normal operations of
Common situs picketing: Union picketing of an entire construction site.