I've been in a similar situation once. It was a very large company that had a policy that if you miss more than 3 days of work consecutively or singularly in one quarter then you are automatically written up. The funny thing is that they gave you more paid sick leave than they would allow you to take.

I've always been kind of sickly and if I come in contact with someone who is sick or someone who has been around someone who is sick I'm going to get it. It wasn't the best environment for me because it was inside a large building full of 500 cubicles, recirculated air, and tons of people who were sick but too afraid to call in sick. I was sick all the time! I of course pulled my diseased butt out of bed and went into work and got others sick most of the time, but there was a limit.

It didn't get me into too much trouble, but it did keep me from being promoted. I ended up being junior to a real jerk who thought that just because he was my supervisor he was superior and more knowledgeable then me. Yeah, didn't fly. In the end he let me be and our team came to me with the customer, policy, and business questions and went to him for questions about vacation, pay, and sick leave.

I guess what I'm trying to say is that sometimes it isn't the quality or quantity of work that you can do, but whether there is a warm body in the seat everyday. I’ve never had any trouble before or after this company. I moved on by my choice and was much happier. Perhaps a change would do you good too.

Good luck!