One of the men was based in New Zealand; the other four had come from Tonga for the season.
The victims are father and son, Koli Vaipulu (son) and Sitiveni Vaipulu (father), Halani Fine, Koli Sione Teulaka, and Samuela Taukatelata.
The men were pulling out on to the state highway after finishing their shift when they were hit.
The crash, just after 8 pm NZT yesterday outside the Aongatete Coolstore, closed State Highway 2 for four hours, and police and fire crews with heavy cutting gear attended the scene.