This depends on the circumstances of your claim. In the most common circumstance, where an employee is dismissed (a.k.a. fired, terminated, laid off, etc.) without any allegation that the employer had “just cause” to dismiss the employee, the time between dismissal and resolution can be fairly short.
Depending on the circumstances, a negotiated settlement might be worked out fairly quickly and without a need to commence litigation.
Even where litigation is required, for some cases the time between dismissal and a court decision can be as little as 6 months in our experience. In cases where cause is alleged, or where there are complicated factual or legal issues requiring motions and preliminary applications, the time may be considerably longer.