Jones, 53, was voted on to the NZR Board of Directors after being nominated by the Tasman Rugby Football Union.
The 55-Test cap former All Black headed off Dame Annette King in replacing outgoing member Glenn Wahlstrom on the 12-person Board.
NZR Chair Brent Impey said Jones would add considerable mana, knowledge and expertise to the table.
"Sir Michael has already made an immense contribution to New Zealand rugby both as a player at every level, and as a leader in the community.