The NunatuKavut (noon-ah-TWO-ha-voot) Community Council represents Inuit-Metis from southern Labrador.
It says a ruling in November by the provincial Supreme Court imposes overly broad restrictions.
The court granted a permanent injunction that prohibits protest within 50 metres of the work site and supports construction of a safety zone for protesters.
NunatuKavut President Todd Russell says the ruling unjustly limits access to traditional aboriginal hunting and trapping grounds.
He says Crown corporation Nalcor Energy was too heavy handed in seeking the injunction after a peaceful protest near the site.
Three men who said they used to hunt in the area were arrested for breaching a court order in December after allegedly walking into the restricted zone.