I am employed as a SEN Teacher. This involves teaching interventions and mainstream lessons. One of the interventions that I teach was previously led by the 2ic and then offered with an increment to another member of the team who no longer does it. The school want to change my job description to include leading on this responsibility but without additional pay. The role includes, organising time tabling, writing reports and analysing data that I will feed back to SLT and school governors. They also want to include EAL responsibilities. I have been doing the post since April 2015 and constantly asking for payment. I only did the post as no one else would do it, stupidly not realising that this is what would happen. I feel as if my kindness has been taken for granted. I was off sick for 6 months due to stress at work last year. My line manager has said that I need to prove myself before they considered paying me for the post. My line mentioned on 3 occasions in other meetings that she needed to discuss my time table. As arranged, we meet to discuss it in my LM meeting on Friday, she had a whole new JD written for me. I asked for a copy of my original JD so that I could make comparisons and she said that she did not have it. I suggested that HR should have a copy. It appears that they do not have one. (I am going to look for my copy) I feel as if I am being bullied.forced into taking on this role. I would really appreciate your advice.