The United Brotherhood of Carpenters and Joiners of America, Local 1190 applied for certification shortly before the terminal date of a competing application by the Labourers' International Union of North America, Local 183.
Due to an administrative error, the Board failed to process Local 1190's application and certified Local 183.
Eight months later, Local 1190 requested reconsideration and revocation of Local 183's certificate.
The Board dismissed the request, finding that Local 1190 failed to act with due diligence in pursuing its application, while Local 183 had actively relied on its certificate to seek a collective agreement.
Balancing the interests, the Board concluded that revoking the certificate would cause greater prejudice to Local 183.