Need help drafting a job offer letter? Your employment will be probationary for 90 days upon which we will review your performance and compensation.Customer: On my yearly review it is stated, "I am recommending you be placed on probation for six months. What is their job title and proposed start date? You may also include information about their probationary period, if applicable, and the date this ends. A probationary period is a trial to see if your skills and ability to use those skills make you a good fit to work for the company! A sample letter offering a job contingent upon the results of a background check or other criteria.