Resident doctors are demanding better rosters, with some having to work 12 day shifts in a row.
The New Zealand Resident Doctors' Association has said that while Lakes District Health Board had made some improvements to its rosters, it still had a way to go to creating a safer working environment for its resident doctors.
The Association's Safer Hours campaign seeks to have health boards throughout the country reduce current rostering patterns of seven 10-hour night shifts in a row to a maximum of four; and from 12 days in a row with only two days off before returning to work, to a maximum 10 with four days off, on affected rosters.
The association says in Lakes District Health Board's case three rosters were still affected and Rotorua Hospital needed to employ a further five doctors to rectify the situation.
Dr Tom Reynolds, who works at Rotorua Hospital and is the association's delegate for the health board, said the board had made changes but "the wheels of progress [were] grinding slowly".
He said the rosters affected about 35 doctors across medicine, surgery, paediatrics and obstetrics.
"The DHB has decreased the number of nights worked consecutively from seven to four on two of their three affected rosters, but these doctors still work 12 day shifts in a row without a break.
"Of even more concern is that our medical registrars looking after some of our sickest patients suffering strokes, heart attacks, pneumonia and other such conditions have had no improvements made to their roster at all."
Dr Reynolds said on some rosters doctors worked 12 shifts in a row including two 16-hour days.
While he wouldn't comment specifically he said doctors were certainly feeling tired by days 11 and 12.
By the last two days of the shift they found they were "starting to drop the balls".
Speaking out wasn't something they wanted to do, he said. "This is by no means something that we have taken lightly."
Lakes District Health Board said as it was in negotiation regarding staff, it would not comment.