If you contact Matrix more than 30 days before the anticipated start of your leave, you will receive an inquiry letter from Matrix.Contact Matrix Absence Management immediately upon an unplanned leave, or up to 30 days before a planned leave.If you expect to be absent for a week or more and have a need for family or personal medical leave, simply contact Matrix Absence Management eServices online or by phone to initiate the process:.All leave benefits are administered by Matrix Absence Management.Employee Perks, Discounts and Resources.