You have several options:
1. Enjoy your new position.
2. Get your co-worker to quit.
3. Quit and move into your mom's basement.
In Canada the Employer can give your position to someone else for the time you are away, but must give you that position back when you return. However, if you are on and off Worker's Compensation then your Employer has a right to give you another position which you can handle with the condition you have. An Employer cannot fire an Employee that is on Workers Compensation.
Can the employee perform the duties of the first job? If not the employer has a right to have the job he needs done.
If you were a good employee, but had a misunderstanding with your former employer you should have tried to get a Letter of Recommendation. It's tough to prove that your former employer is saying anything bad about you so there is little you can do. I don't know how long you worked before, but, if it was just a year or two then on your Resume just skip the last job if you can. I have done that. If they ask just say you took the year off. If I don't trust the former employer I will choose a Supervisor or another person with a position in that company for the next possible employer to contact.
Yes they can. If it negatively impacts the employee's performance at their Full Time position, they can be disciplined or let go.
Employer
If a person leaves one employer to go to work for another employer but has met the fica limit do they have to start a new limit with the new employer?
YES. The state has a legal right/requirement to get correct and factual information about your employment history, to determine if you are entitled to benefits , or not. Another answer: Yes. When you file for unemployment, you are stating your position as to why you are eligible. The employer gives their version and the state has to separate the facts and determine who is right.
Employer
You could thank your employer by firstly thanking him verbally then continuing your excellent work and aiming for another well done by your employer
A person can ask their employer for a letter of reference for another employer. It is best to always be good standing with every employer.
He has to find another choice for the position.
No. It is a description of the position of one organ to another. You head is superior to your feet. Your feet are inferior to your head.