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Founded in 2003, Trivantus is a leader in payroll services, employee benefits and human resource administration. Owned by the Gatsas family, Trivantus is no stranger to success. Michael Gatsas co-founded Staffing Network, a Professional Employer Organization which grew to be one of the largest employers in New England.

Trivantus has a reputation for providing leading personalized service and has been voted Best Payroll Service Company by New Hampshire Business Review for many consecutive years. Our philosophy is based on employing relationships through excellent communication.

P.O. Box 6655
Manchester, NH 03108


TEL: 603.624.7788
FAX: 603.647.9911


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