Dear Boss,
Why the hell don't you care for your people? You were asking us to work for twelve hours, six days in a week! WTH! You never ceased to make us take an OT (overtime) everyday, which could also possibly (and MORE appropriately) mean "Oh, Thank you." We don't even know if we're paid for that.
Why do you have to be so cruel to us? I'm not referring to you, Sir M***. I'm referring to your wife, who's obviously turned you into a slave, commanding you to follow her orders against your will.
Mam J***, when are you going to change? Oh, please. Have mercy on your fellow countrymen. I don't even hear you speaking our language, like you were never born and grew up here. Like you never cared at all for other people.
Don't worry, I'm gonna resign soon. And you'll pay for this.
Signed,
Your future culprit, Unpaid Employee