Employer's withholding of deducted union dues following an illegal strike violated the Labour Relations Act.
The union filed a complaint alleging the employer committed an unfair labour practice by withholding union dues deducted from employees' wages following an illegal strike.
The employer argued its actions were permitted under the collective agreement as a 'cancellation of dues deduction' penalty.
The Board found that continuing to deduct dues but holding them in escrow did not constitute a cancellation of dues deduction.
The Board held that the employer's unilateral impounding of union dues interfered with the administration of the trade union, violating section 56 of the Labour Relations Act, and ordered the employer to remit the withheld dues with interest.
International Union, United Automobile, Aerospace & Agricultural Implement Workers of America and Local 636 v. Thomas Built Buses of Canada Limited, 1980 CanLII 2799