"WorkChoices" introduced several restrictions on who was able to lodge an unfair dismissal claim with the AIRC. Unfair dismissal was defined by the "Workplace Relations Act 1996" (the Act) as dismissal which is "harsh, unjust or unreasonable." Employees had to be working for a business that had more than 100 employees, and served a qualifying period of 6 months to claim unfair dismissal. Other reasons that excluded an employee from taking unfair dismissal action included where an employee was employed on a seasonal basis or on a contract of employment for a specified period or task, employed on a probationary period that was reasonable and determined in advance, a short-term casual employee, a trainee engaged for a specific period, or an employee not employed under an award or workplace agreement and earning more than $101,300 per year.