This text is based on an article on the McKinsey & Company website.
Breaking promises
While the relationship between manager and subordinate is primarily professional, it is still largely based on mutual trust. A manager must not, under any circumstances, trample on that trust - for example by promising the subordinate a salary increase after a certain period of time or after meeting specific conditions, but in the end, despite all this, not enabling the rise to happen.
Unequal treatment of subordinates
Employees resent injustice, especially when it is aimed at them personally. So if they see their manager has a favourite subordinate, or measures different people by different standards, it leads to deep and very serious frustration.
Micromanagement
One of the most unpleasant feelings one can experience at work is the boss constantly breathing down one's neck and watching one's every move. Micromanagement is thus one of the fatal mistakes employees do not forgive. Those employees who for some reason tolerate it end up so paranoid and so afraid to make any mistake that it completely kills the creative and innovative potential of the entire team.
Preventing employee development
Employee training and development have become virtually automatic. However, some people still cling to the idea that a worker who is going through training without making money for the company at the given time cannot be tolerated. If a manager does not support the development of their employees, allow them to educate themselves, or even outright prevents them from self-developing, then it should come as no surprise that ambitious, skilled workers will leave the team.
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