I've been told I have a meeting with my supervisor and HR tomorrow, so I'm anticipating the worst, but not 100% positive I'll get fired. My supervisor could not really give me a lot of information, so, do I hand in a letter before they have a chance to fire me? I am supposed to work a 30 day notice, so I've written a letter reflecting that, with the usual thanks for the "opportunity." The one reason I am so hesitant, is I want to hear them out. I know of no reason I should be fired, there have been no incidents at work that I am aware of. Advice please!