Is "It's not working out with us" a plausible reason for firing an employee who has been with the company for 1 year?

In Ontario, an employer is allowed to terminate an employee for any reason as long as its not discriminatory and as long as they pay them a fair severance package. You can use the following link to determine your entitlements upon termination (http://severancepaycalculator.com/) and then contact us at the number below for a consultation with a lawyer to discuss your situation.