It’s just a great source of cheap labor.
Such people are deluded into thinking that talking to a boss about a promotion or pay raise is embarrassing and uncomfortable.
“You’re being used to your advantage, and you’re thinking about shame?”
It is important not to act on the wave of emotions!
You should not save your discontent for a long time, and then burst into the head, splashing out on him, all that has accumulated.
And there is no need to use theses like “I work more than anyone else,” “I work overtime, while others” and the like. This is not only ineffective, but may even exacerbate the relationship with his boss.
What should you do then?
Armed with the facts of your high performance and choosing the right time (the company is going uphill). You have to prove that the salary increase will be beneficial not only to you, but also to the company