Can an employer fire someone for doing what they were taught to do. But forgetting to do something

Yes, although in that case the employee would almost certainly be owed severance. If you’ve been terminated, make sure to use our Ontario Severance Pay Calculator (www.severancepaycaluclator.com) to find out how much you may be owed, and give us a call at the number below to discuss your situation in more detail. We would be happy to help in any way we can.