GNSA is a national provider of Payroll and cloud based Human Capital Management technology, headquartered in Portland Oregon. We have been around for over 20 years and process in excess of 1 billion dollars of payroll annually. We offer modular solutions, customized to each client’s needs. Our customer service model is a team approach. Your four-member implementation team continues as your on-going service team, providing our customers with unparalleled continuity of service and support.