The data was released by the Freedom Fridays initiative, promoted by the Bay of Islands Marketing Group, which encourages people to skive off work early on a Friday and head to the region.
The group's chairman, Charles Parker, said Savvy employers should take the opportunity to motivate staff by allowing them to leave early on a Friday and partners could do the same, by surprising their loved one with a romantic getaway.
"The Bay of Islands is an easy three hour drive [from Auckland] so whether you leave work at 1pm or 6pm on a Friday you can still get there in time for dinner before enjoying a relaxing weekend away," he said.
Mr Parker said Freedom Fridays was designed to "reignite New Zealanders' love affair with the Bay of Islands" and increase visitor numbers to the region.
According to the New Zealand Productivity Commission, Kiwis work long hours but lack in the amount of goods and services they produce.
Data from Statistics NZ shows that 153,000 work 50 hour weeks, 141,000 work 45 hour weeks, while more than 19,000 claim to work 70 hour weeks.
In Sweden, six-hour work days are being trialled in an attempt to cull wasted ours during which staff are not working productively.