Is worker entitled to promotion?

If an employee has been publicly recognized, and compensated, for functioning as acting manager of a department for five years, does that employee then have an overriding right to said position when the organization decides to hire for that position?
By Tim Mitchell
|Canadian Employment Law Today

Question: This is a unionized environment, which requires that all positions be posted internally, and that all qualified internal candidates be interviewed. On a number of occasions, these conditions have been waived when warranted (for example, when no internal candidates have the required qualifications) and candidates have been granted positions without having to compete or be interviewed.

If an employee has been publicly recognized, and compensated, for functioning as acting manager of a department for five years, does that employee then have an overriding right to said position when the organization decides to hire for that position?

Can the employee argue that since management has clearly been satisfied with his performance in the role (having left him in that position for five years), he should not be required to apply and interview for the position?