Montgomery Pacific Outsourcing (MONTPAC) The Chamber represents more than 2,000 businesses of all sizes representing 210,000 employees from a wide variety of industries that are contributing more than $32 billion in revenue to Hawaii’s economy. Learn more about our nonprofit members and their work in our community. Share: Employment/Staffing/Leasing Agencies Montgomery Pacific Outsourcing (MONTPAC) Visit Website 1019 Waimanu Street, Suite 101 Honolulu, HI 96814 (808) 923-3300 (808) 537-3396 (fax) About Map About MontPac Outsourcing provides top quality accounting, reporting & financial management services to businesses that think big. What's Nearby? Distance: 5 10 15 20 25 50 mi.