Minn. R. 5200.0230
GRATUITOUS SERVICE
Gratuitous service is voluntarily donated work performed by a person who receives for it no monetary compensation or other valuable consideration. The individual may be reimbursed for out-of-pocket expenses needed to perform the services, but only if these expenses are itemized. The acceptance of an expense allowance (that is, a gross sum provided with no itemized list of expenses) makes the individual nonexempt. See Minnesota Statutes, section 177.23 , subdivision 7, clause (7).