Just cause for termination is a thorny issue. Employers often wish to advance it as a means of reducing (hopefully to nil) their obligations to an employee on termination. However, under Ontario employment law, one can be both dismissed for just cause and entitled to termination pay and severance. A fact, I would respectfully submit, lost on many including most judges unfamiliar with the nuances of Ontario employment law.
The 2011 case of Oosterbosch v. FAG Aerospace Inc., 2011 ONSC 1538 (CanLII) succinctly demonstrates the difference.