If you change to a benefits-eligible status during the year, you will become eligible for benefits the first of the month following or coinciding with the status change. To be sure your deductions begin on time and you have coverage when you need it, be sure to enroll within 14 days of a status change. However, you will have 31 days from the date you are eligible to enroll in benefits. All applicable pre- and post-tax payroll deductions for the benefits you elect will begin on the first paycheck of the effective month; however, benefit arrears may apply based on when you enroll and/or as soon as administratively feasible.