The New Pension Scheme (NPS) introduced under the New Pension Fund Development and Regulatory Authority (NPFDRA) Act passed by the United Progressive Alliance-II government with the support of the Bharatiya Janata Party will affect the existing pensioners as well as all those who joined the service prior to January 1, 2004, according to M. Krishnan, secretary-general of the Confederation of Central Government Employees (CCGE).