What does it mean to give substance to an employment contract?

Questioner

I have to come to the office for an interview next Friday, for an official warning because of a stupid mistake.. but now I got a letter sent to me and I don't understand half of the text. My manager says I have nothing to fear....

Lawyer

What is important is what exactly is in the letter you received. Without that information, it cannot be assessed. I advise you to seek advice on that. You may contact me without obligation to discuss this.