Probationary period clause samples. Article2. 3 Party A shall timely review the performance of Party B prior to the expiration of the Probationary Period.1) The document is a probationary employment contract between an employer and a new employee. An Employment Probation Period Letter serves as a formal document outlining the terms and conditions of an employee's probationary period. An employment agreement probationary period is the word that describes the beginning stage of a task where an employer checks if an employee is fit for a job. A probationary period can be a useful management tool, but it can also cause legal trouble. Learn how and when to use probationary periods. A probationary period is a set amount of time you allocate to training and assimilating a new hire. An offer letter specifies a job offer in the making. With our free template, you can set essential details like salary, job descriptions, and more in stone.