National Shared Services Office, Government of Ireland | 3,544 followers on LinkedIn. To provide excellent corporate business services to Government and other Public Service Bodies that meets end user needs | The National Shared Services Office (NSSO) is part of the Government of Ireland. It is a Shared Services provider for HR, pensions and payroll administration and finance services for Government Departments and Public Service Bodies. The NSSO has over 800 civil service staff in 6 offices: in Galway, Tullamore, 2 in Killarney, and 2 in Dublin.