I worked 13 yrs for a trucking company hauling fuel. My yearly evaluation over the course of my employment was always excellent. My driving record was clean and work performance was excellent without incidents .Due to stress,fatique and family problems, I had a small spill in early August 2015---was given a 3 day suspension without pay and when I returned to work was given a written notice if another incident happened I would be fired. Three days later I was observed unloading at the customer (gas station) and violated several minor Company policies. Even thought I was warned the Company would be monitoring my actions, it didn't register with me. I was allowed to continue my shift and made 1 more deliver without being observed. I was off work for 3 days (regular days off) and when I returned to work was called in the office and terminated without notice or having representation. My Company is Federally regulated and I belong to an association, which has filed a grievance. I am 67 yrs old.
My question: Am I entitled to severance pay?
If my rep feels the grievance won't go anywhere and releases the grievance--which would free me up to hire an external lawyer---do I have a good grounds to sue the company for wrongful dismissal? They terminated my employment with cause.