Firefighters helped in releasing a man from being trapped by a digger near Taupō.
Fire and Emergency New Zealand were alerted to the incident at Iwitahi about 4.40pm Tuesday.
A Fire and Emergency spokeswoman said about 6pm the crew was still on site but the man had been released.
A WorkSafe spokesperson said it had been notified of the incident and is making inquiries.
"These inquiries will determine our next steps."