For employees appointed from competitive Civil Service lists, the probationary period is the final phase of the selection process. The probationary period is used as a time to assess whether the new hire or newly promoted employee is a good fit for the position.You could begin describing conditions that got you a probation letter (immaturity, poor study habits, family issues, work hours, whatever). Learn about the employment probationary period, its purpose, legal protections, and best practices for managing new hires effectively. The first six months of employment are considered a probationary period. Did you hire a new employee? Learn all about probationary period, what you should keep in mind, and how to do it right at Homebase! If you are appointed under a new license, state law requires that you serve a probationary period of four years and a day. The first 90 days of your employment will be under a probationary period. Quantity of Work: You should be able to complete your assigned tasks in a timely and efficient manner.