The federal government's decision to change one word in the name of the national industrial relations umpire is expected to cost about $100,000.
A parliamentary committee has been told Fair Work Australia's rebranding as the Fair Work Commission prompted a logo redesign costing $2100.
The commission's general manager Bernadette O'Neill said other internal costs linked to the January 1 name change were estimated at $97,500.
"Some of the costs haven't been realised yet in relation to stationery and signage," Ms O'Neill told the Senate estimates hearing on Wednesday.
Liberal Senator Eric Abetz grilled commission officials over the redesign, questioning why the existing logo could not be retained with simply one word changed.
Ms O'Neill said the commission saw it as an opportunity to "slightly modernise" the logo. Fair Work Australia was created in 2009.
Senator Abetz said the new logo was similar to the old logo and still included the coat of arms, but the location of a line moved.
Ms O'Neill said the designers "came up with a range of options, some of the more minor change scale and some of greater change".
Senator Abetz retorted: "You can see where the money goes when this costs us $2100."
The government has previously argued the new name more "accurately reflects the functions of this body".
The hearing continues.
