Disciplining employee who isn’t keeping files up to date

Employee says we fundamentally changed his job responsibilities because he had never been disciplined before or forced to keep his files up to date. Is he correct?
By Brian Johnston
|Canadian Employment Law Today

Question:

We have an employee who has not been keeping his files updated. We have given repeated verbal warnings about this problem and have introduced a company policy that says files must be updated. Consistent with the terms of this new policy, we have removed clients from his territory for files that have not been updated. The employee is now saying that we have fundamentally changed his job responsibilities because he had never been disciplined before or forced to keep his files up to date. Is he correct?

Answer: