341 U.S. 675 (1951) Cited 494 times 1 Legal Analyses
Affirming Board's assertion of jurisdiction over activities taking place at local construction site based on finding that "any widespread application of the practices charged might well result in substantially decreasing" the flow of interstate commerce
394 U.S. 423 (1969) Cited 117 times 6 Legal Analyses
Upholding union rule, enforceable by fines and expulsion, imposing limitation on immediate pay that members could receive for piecework because Court found no "impairment of statutory labor policy"
In Engineers, the Board used the "clear and unmistakable" rule to justify its decision that blanket no-strike clauses presumptively do not extend to sympathy strikes.