It has always been clear in Ontario law that employers cannot unilaterally alter the most important aspects of the employment contract – compensation, location of work, hours of work – without the employee’s consent or providing adequate advance notice of the change. If it does, it may lead to a claim of constructive dismissal. But what if the change imposed in the contract is not as important as some of these? How can the employee respond to a change in his position that he perceives to be a demotion, even if the title remains the same.