QUOTE (Santo Gold @ Dec 12 2008, 12:26 PM)

For an ERISA 403b plan, participants and the employer are currently contributing money into annuities via 2 separate large annuity & insurnance companies. The plan sponsor/plan administrator would like to change that and only have the new money go into 1 annuity provider's product for, among other reasons, making it easier to track.
Can they make this change prospectively for new contributions?
Yes, but in so limiting the investment options, they might bear greater potential liability for investment underperformance vis-a-vis the other, eliminated company, than the employer currently might bear.
QUOTE (Santo Gold @ Dec 12 2008, 12:26 PM)

Can they force participant's to move their existing account balances out of the one insurance company's product and into another insurnance company's product?
Only if the existing contracts with the annuity/insurance companies give the employer that right. If it does, there could be liability associated for possible underperformance after the forced move. Also, you might be forcing surrender or transfer fees, back-end loads, etc. that will be assessed against the benefits that might not apply if those investments are allowed to remain where they are longer.