ترجمه - انگلیسی-ترکی - As writers of performance appraisals, managers...

Explanation: It's about the things that managers are afraid of when they write performance appraisals (= evaluations of an employee's progress in the workplace).

They are afraid that ...

1) when they write something about someone, it will be "cast in stone" (sometimes "set in stone" ) - it will become a permanent part of the person's record, even if it later becomes clear that it was not correct.

2) someone may criticize their grammar (spelled wrong here, interestingly) or spelling.

3) they may say something that they are not allowed to say because of the law (my guess is that this refers to a human rights law which protects people from slander).

4) they may say something that they cannot prove.

NOTE: Maybe I should have done this instead of trying to translate it in the first place - please feel free to reject my translation.