MSA Professional Services, Inc. 751 likes · 146 talking about this · 8 were here. An A/E/C organization dedicated to enabling people to positively impact. Learn about working at MSA Professional Services. Join LinkedIn today for free. See who you know at MSA Professional Services, leverage your professional . MSA specializes in the sustainable development of communities. Big or small, we do whatever it takes to meet each need, working to make communities . MSA Professional Services, Inc. benefits and perks, including insurance benefits, . Reported anonymously by MSA Professional Services, Inc. employees. . Pension Plan; 401K Plan; Retirement Plan; Employee Stock Purchase Plan . MSA Professional Services, Inc. 332 W. Superior Street, Suite 600. Duluth, MN 55802. Phone: 218-722-3915. Toll-free: 800-777-7380. Fax: 218-722-4548 WV MSA Individual proprietorships Partnerships Professional service organizations Charlotte-Gastonla-Rock Hill, NC-SC MSA Individual proprietorships . For explanation of terms and comparability of 1987 and 1992 censuses, see appendix A. For definitions of CMSA’s, MSA’s, and PMSA’s, see Professional . . and comparability of appendix A. For definitions of CMSA’s, MSA’s, and PMSA’s, . (X) Professional service organizations———– 14 5 522 3 069 99 14 53 32 .