Here are other expressions that you should avoid when dealing with your employees:

Just handle it, I don’t care how you do

Don’t leave your employees just like that with no help, no assistance, no advice, no correction. When they do something wrong or make certain avoidable mistakes, it is okay to be mad for a while, but always come back to set things straight and put them back on the right track. Always remember that their failure is your failure too and you don’t want that. Also, when you assist your employees, the favour is always returned whether you ask for it or not. It’s just karma. They’d do their job and do extra and feel good about it because they know you’ve got their back too.

You are lucky you have a job

They are not lucky! Never use that expression. They were hired because they have the needed skills to get the job done, tell them they are lucky because they aren’t. You have to start seeing them as key players that you need for a successful business career. Saying something like this to them is also a confidence killer, the ones who are emotionally weak may break down completely and quit the job; those who are a bit tough may take an oath to make your job as difficult as they possibly can.

You are stupid, worthless etc
Insults and abuses are very demeaning especially when said with such a tone that could make someone cry. When you make it a habit to abuse your workers on a daily basis, there would be a strain in your relationship and ultimately it will tell on the productivity of the business. Looking down on people and denigrating them will not make them respect you more; in fact, it will only attract the opposite. They will talk behind your back and frustrate your career. But when you shower them with duly deserved praise and approbation, they will naturally love you, and we all know what genuine love could make a person do – anything to make the other person happy.

You are doing a terrible job

If you are not going to comment on their performance reasonably and respectfully then don’t comment at all. I am not saying that you should ignore someone who is not delivering on his job, I am saying there are subtle ways to drive the message home. First, appreciate their efforts and their high points, then point out areas that need urgent change or improvement. They are likely to understand you better and commit themselves to becoming better workers than if you just crucify them totally with your mouth.

Diplomacy in inter-personal relations is very important. Be mindful of what you say at any point you find yourself. The office is no exception.

Source: nerveng.com