National Labor Relations Board v. Curtin Matheson Scientific, Inc.

1990-04-17

Headline: Board’s refusal to presume striker replacements oppose the union is upheld, reversing the appeals court and making employers prove case-specific evidence before ousting a union.

Holding: The Court held that the NLRB permissibly refused to adopt a blanket presumption that striker replacements oppose the union, reversed the Court of Appeals, and approved a case-by-case, evidence-based approach.

Real World Impact:

Prevents employers from automatically counting replacements as anti-union without extra evidence.
Keeps unions from being ousted simply by hiring many replacements.
Requires case-by-case proof of replacement workers’ union sentiments.

Topics: labor disputes, strike replacements, union bargaining, employer rights, right to strike

Summary

Background

An employer that buys and sells laboratory instruments (Curtin Matheson Scientific) had a union certified in 1970. In 1979 a contract expired, the employer locked out workers, and the union struck. Five employees crossed the picket line and the employer hired 29 permanent replacements to fill striker jobs. The union later ended the strike and offered to return; the employer then withdrew recognition, refused to bargain, and the union filed unfair-labor-practice charges. The NLRB found the employer had violated the Act; the Court of Appeals refused to enforce the Board’s order and applied a presumption that replacements oppose the union.

Reasoning

The Supreme Court’s core question was whether the NLRB must adopt a blanket presumption that striker replacements oppose the union. The Court held the Board reasonably rejected any universal presumption and instead required case-by-case evidence about replacements’ views. The opinion emphasized deference to the Board’s experience, noted replacements might want union representation for nonstrike reasons, and explained that a fixed antiunion presumption could encourage employers to hire their way out of bargaining and chill the right to strike. The Court therefore reversed the appeals court and sent the case back for further proceedings consistent with the Board’s no-presumption approach.

Real world impact

The decision means employers cannot automatically rely on the fact of replacement hires to prove the union lost majority support; they must present objective, case-specific evidence. The ruling protects the bargaining relationship and reduces the chance that employers could end representation simply by hiring many replacements. The Court remanded factual questions about whether this employer had a good-faith doubt to the lower court to decide without using any presumption.

Dissents or concurrances

Chief Justice Rehnquist concurred but warned the Board’s rule pushes the limits of deference and may make it hard for employers to show good-faith doubt; Justices Blackmun and Scalia dissented, arguing the Board departed from prior decisions and that substantial evidence supported finding the employer reasonably doubted the union’s majority.