Northern Ireland Victims Commissioner Judith Thompson will not be reappointed when her term in office ends next month.
She has campaigned for payment of a pension to those most severely injured during the Troubles.
That was stalled following a Stormont dispute over whether former paramilitaries should be eligible.
The DUP and Sinn Fein are at loggerheads over the definition of a victim.
Northern Ireland Secretary Brandon Lewis has said the pension for the badly injured should be funded by Stormont.
Relatives of some victims of non conflict-related violence have said Northern Ireland should have a commission representing all victims of crime.