The majority of senior civil servants are in favour of MyCSP, the government's mutual for managing the Principal Civil Service Pension Scheme, but 80% fear there may be changes to their benefits.
Local authorities will have to overhaul administration systems before changes to the Local Government Pension Scheme in 2014, warns a provider.
MyCSP has secured 15 contracts to administer public sector schemes including those of the House of Lords, the Food Standards Agency and the Electoral Commission.
My Civil Service Pension will transfer its employees to a Prudential defined benefit scheme.