What should I do if my boss is trying to fire me?

Act calmly and build a record. Keep copies of performance reviews, emails, and any write-ups; note dates and witnesses; and request expectations in writing. Avoid giving a clean reason to fire you. If the pressure started after you complained about discrimination, harassment, safety, or unpaid wages, that timeline may point to retaliation – and is worth reviewing with an employment lawyer before you resign or sign anything.