My line manager has some kind of issue with me and at times has been very hostile, including shouting and swearing at me. I recently had my appraisal with him which was quite negative and he brought up something I'd been involved in on a personal fun thing a few months back and accused me of being disruptive, although he did not address this with at the time. In my actual written appraisal the wording was much harsher and he also included comments that were not actually discussed at the review. Is this legal? I am now being asked to sign the document and I don't think I can but neither do I want to make life more difficult than it already is.