When a new employee is hired, there is often a three- or six-month probationary period. The probationary period should be completed with a formal review so that the employee understands how they are doing, what shortcomings or challenges they are exhibiting, and confirms the supervisor’s expectations. This review is also a key part of your defensibility strategy, since it allows the supervisor to document that the employee has completed orientation and is producing satisfactory work, or that there are deficiencies present (which will be supported with additional proof).