Employees, officers, and commissioners of port districts shall, when engaged in official business of the port district, be entitled to receive their necessary and reasonable travel and other business expenses incurred on behalf of the port district. Reimbursement of such expenses may be granted, whether incurred within or without the port district, when submitted on a voucher with appropriate evidence of payment by such employee or official.

Section headings—1965 c 101: "Section headings as used in this act do not constitute any part of the law." [ 1965 c 101 § 3.]