How do I defend myself to receive unemployment benefits. I have a hearing and the employer is severe misconduct.

Was terminated with option to resign. I resigned a was granted unemployment. Now former employer is appealing unemployments decision. They state severe misconduct. I have worked for 25 years at the same place with all outstanding evaluations. 2 years ago we merged with a big hospital. since then lots of changes in procedures and protocol. A new system was put in place for time cards a system called KRONOS. I was in charge of everyone time cards. I was changing increments of time when staff was taking more time allowed to clock out. They were not working overtime, staff was aware but because I trusted them I did not always follow the change of time with a comment. The company states I abused the labor laws. When I did not do something correctly on the system someone would always contact me but no one ever did in these cases. Never given a warning just terminated. 4 weeks prior to my termination I was told about it by my manager and started to comment every change I made.