SEMA4 Employee Expense Report includes instructions for completing the form. Instructions are provided for those who enter business expenses in Self Service.Can I lodge with family or friends during a business trip? Business travel expenses can save you money at tax time! Learn about deductible travel expense rules and maximize your savings today. Take on your out-of-town business trips. If you do not fit any of these categories,. This page outlines the general guidelines regarding travel expense reimbursement and answers the most frequently asked questions. County employees use APEX to request mileage and parking reimbursement. For more information, see the Mileage and Parking Reimbursement policy.