Comp claim or not?

[tbear6410]

I'm in NYS. First off, I've been having lower back and hip pain and seeing one doctor after another. I just saw a Doctor yesterday and he confirmed it that the pain is from part of my job in the Fish Department at my store. He told me to have my manager file a Workers Comp Claim on it and to call him back with Claim Numbers. My manager says if I file the claim, the company will refute it and I'll loose my job. He's trying to say I've had this problem for years, even though this started up around April or May of this year. I called the Doctor back and told them what he said and I asked for a statement from him saying the pain is from doing a couple of the jobs repeatedly day after day. Doctor's office will not make a statement until I file with Comp through my work. What can I do about any of this?