The University shall establish each year a minimum annual compensation for postdoctoral appointments. Ordinarily postdoctoral appointments are for full-time employment. If a fractional appointment is requested by the appointee, this must be clearly stated, with the understanding that the appointee may perform and be compensated for additional University services or outside employment, up to but not exceeding full time. Moreover, evidence must be provided that such a fractional appointment is consistent with the rules of the funding source and with the visa requirements of appointees who are not U.S. citizens or permanent residents.