July 10, 2021 07:41 Updated Follow No, this is an option, not a requirement. Related articles Will a Purchase Order work for an encumbrance? Can payroll be encumbered? Encumbrances for payroll: Does this have to be done? What do we do if there is an unpaid contract and appropriation has been used? Is it 10 calendar days or 10 business days as code says 10 days for public notice of proposed additional appropriations?