While this usually means an employer is looking to make savings by replacing a generous scheme, by one that is less so this is not always the case. It can also be a sensible way of making big changes to pension arrangements when it is too difficult or complex to change the existing pension scheme.
For example schemes that have needed to make big changes to cope with modern working and family patterns have sometimes found this the easiest way to make the changes, even though the new arrangements are more or less as generous as those of the scheme they are replacing.
But it's right to ask some very hard questions, as more often it means a worse deal is on offer.
Particularly in recent years it usually means the employer wants to close a relatively generous salary related scheme and replace it with a less risky (to the employer), and probably less generous, money purchase scheme.
In this case the employer may be doing different things with the old scheme:
What you should do about transferring a pension you have built up already will depend on the alternatives offered and your personal circumstances and preferences.
A good employer will provide clear information and access to individual advice from independent outside advisers.
As very rough rules of thumb (and your circumstances may be different):
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