The employee must fill in the date of travel, the place where the travel started and the destination(s), and the reason for travel. Yes, Massachusetts employers must reimburse their employees for mileage and other transportation related expenses.Traveling to Massachusetts for work? Our per diem calculator tells you exactly how much you can spend daily on your business trip. When travelling for business purposes, not only the transporation portion is deductible, but also lodging while away as well as meals. Discover per diem rates for Massachusetts cities to manage travel costs. Use Ramp's calculator for easy tracking and GSA-compliant reimbursements. It appears that one approach may be to reimburse travel expenses for fully remote employees coming to the office on occasion as needed. Information on Travel Expenses and reimbursements. For reasonable expenses on preapproved business.