Use form CA1609 to provide a change in the Employer's Contracting-Out number (ECON) for Contracted-out Salary Related (COSR) schemes only.
Use form CA1609 to provide notice of a change in the ECON. It is to be used by COSR schemes only.
Related forms and guidance
Termination of contracted-out employment (CA14)
Guidance on salary related pension schemes and salary related parts of mixed benefits schemes.