MMC Benefits Handbook
Plan Spin-off or Merger
In the event of any Plan merger or spin-off, the value of your account immediately following its transfer to the new plan (calculated as if the Plan had terminated) may not be less than the value immediately prior to the transfer (calculated as if the Plan had terminated). In addition, any portion of your account representing before-tax contributions will remain subject to distribution restrictions and generally will not be eligible for withdrawal while you are employed unless you attain age 59-1/2 or have a financial hardship, as defined under the tax law.
The transfers described above are not eligible rollover distributions or treated as taxable distributions. You will have no income tax or withholding liability as a result of such transfer.