The grievor previously signed Minutes of Settlement waiving his employment rights under Article 20 of the collective agreement in exchange for a surplus package.
Years later, after returning from long-term disability, the Employer mistakenly sent him a letter offering him bumping rights and a potential job relocation.
The Employer quickly rescinded the offer upon realizing the error.
The Union argued the Employer was estopped from relying on the prior settlement due to the mistaken offer.
The Grievance Settlement Board dismissed the grievance, finding the mistaken letter was not intended to alter the legal relationship and the grievor had not relied on it to his detriment.