Cranes are being left sitting unused in yards despite a mountain of work as the industry struggles to find enough people to operate them.
A record number of cranes tower over Auckland's skyline marking major developments in the midst of the country's building boom.
Rider Levett Bucknall publishes a quarterly crane index for the country. In its most recent report in September it found a record 140 long-term cranes across New Zealand's skyline - 90 of which were in Auckland.
And for every tower crane on the horizon, 10 smaller mobile cranes are working around them.
Crane Association chief executive Rod Auton said the problem was finding people to operate them.
"There is around about 1400 qualified crane operators and we could probably do with 200 more. If the work increases over the next 12 months that figure will go up."
It meant cranes were being left unused or work was having to be extended until a person could be found to do the job, he said.
"I know the guys work really hard and they do a great job throughout the country but they can't be everywhere all the time."
He said particularly in Auckland with the number of new developments he would think "many of them would be hard pressed to get cranes for their work."
Mr Auton said the obvious solution would be to bring in people from overseas however, that was a lengthy process.
"Crane operators aren't actually recognised as a qualified profession or job and the ANZSCO [Australian and New Zealand Standard Classification of Occupations] system, which is the basis in which Immigration put people on the shortage list.
"They're not high enough up the list to be put on the short list so they've got to be brought in on a one-on-one basis and that process can take some time.
"Until the system changes and we move away from ANZSCO, which is predominately an Australian system, then I doubt very much whether we'll get changes."
In the meantime he said they were working on boosting qualifications for the profession.
"We're looking at unit standards that can be entered at an earlier age than we currently have entering the industry. The average age of someone coming into this industry now is about 24 so we're looking at trying to capture the young people between 18 and 24."
Auckland and Waikato Cranes chief executive Philip Gedye said if he had another 12 people he could put them to work straight away.
"We're definitely very affected by the shortage of skilled people familiar with high-hazard operations. Crane operators, truck drivers, riggers, dogman, all those sorts of people are in heavy demand and short supply.
"On any given day we would have assets sitting idle that could otherwise have gone out the gate on booked jobs simply for the lack of competent or qualified person to operate them."
He said it meant illness or absence had a knock-on effect that meant people doing longer shifts.
"We're trying various recruitment and training things to take people we've got and make them more multi-skilled [and] to seek to get new people in whether that be younger trainees or even people who have retired.
"We're looking at immigrant labour that's skilled as well. We're progressing on that front towards the accredited employer scheme."
He too pointed to the difficulty bringing in workers from overseas.
In the absence of skilled offshore staff he said some in the industry were cutting corners when it came to recruitment.
"We have observed some behaviours and practises around the industry that are less than ideal or symptomatic.
"Sometimes it's not necessarily things that are that bad but it's just obvious that training hasn't been put in or that maybe employers are scraping the barrel when it comes to who they take on simply because of the desperation of meeting their client's needs."
However, Smith Crane and Construction managing director Tim Smith was not feeling the pressure and said the construction boom had meant his company could expand.
"We've probably purchased 20 cranes in the last 12 months: A combination of tower cranes predominantly used in the high-rise sector, crawlers, which are predominately in the infrastructure and foundation works, and mobile cranes which taxi about."
He had no problems finding people to operate them.
"We've got a good loyal crew of staff and we've supplemented that with quite a few Filipino immigrants coming in who have proved really reliable and very good at what they do," Mr Smith said.
That was in part due to being an Immigration New Zealand-accredited employer, which meant it was easier to hire workers form abroad.
"Most of the guys we've attracted have been the top-end people who have been working in the Middle East or Africa etc. We've had a few and then when you look after them, pay them well, and treat them very well, they're pretty keen to invite their friends along."