I have worked for a Tim Hortons owner for almost 12 years, first couple as manager then as General Manager for the rest. Five days ago just before a managers meeting I was told I had been replaced, I was losing my benefits and not to throw my toys out of my pram. Yesterday my boss came to see me as I had asked him to document the changes to my remuneration package, job title, job description and duties via email on Sunday, so far I have not received it. He was not happy that I asked for this, he told me he was giving me to Friday to get my big boy pants on, that he would pay me 8 weeks severance if I didn't want to stay to support the new gm. If I stayed and he thought I wasn't supporting him he would fire me. I have received no discipline during my employment. In January he told our newest manager I was doing a great job and we had a great working relationship, two weeks ago he told her I was a shitty gm. My question is does this constitute constructive dismissal and if so what should I do next?