Metropolitan Edison Co. v. Nat'l Labor Relations Bd.

Holding that a union may, under certain circumstances, waive members' NLRA rights

First National Maintenance Corp. v. Nat'l Labor Relations Bd.

Holding that an employer has no duty to bargain over a decision to shut down part of its business purely for economic reasons

Nat'l Labor Relations Bd. v. Acme Industrial Co.

Approving "discovery-type standard"

Labor Board v. Truitt Mfg. Co.

Holding that the duty to produce information relevant to a bargaining issue is derivative from the broader statutory duty to bargain in good-faith

Neo Gen Screening, Inc. v. New England Newborn Screening Program

N.L.R.B. v. Illinois-American Water Co.

Explaining that accretion is "the addition of a relatively small group of employees to an existing bargaining unit where these additional employees have a sufficient community of interest with the unit employees and have no separate identity."