The Government has decided financial assistance for legal costs will be provided for workers who have a role to play at an inquiry into the Pike River mine disaster.
Twenty-nine men died at the West Coast mine following an explosion on 19 November last year.
A Royal Commission will meet for a preliminary hearing at the Greymouth District Court on 11 March.
Legal assistance is already being provided to the families of those men who died.
Prime Minister John Key says while there were 150 workers and contractors engaged by Pike River Coal Ltd at the time of the initial explosion, it is still to be determined how many will be required to give evidence.