"By the very nature of our culture, we expect to have a good work/life balance, but this may be at the expense of our standard of living, which most people are not prepared to accept," she said.
Newlove said the reduction in holidays could also be due to lower staffing levels making it harder for employers to take a break.
Global stress levels increased at their lowest rate since 2005, with New Zealand stress levels increasing 15 per cent, down from 28 per cent in 2010.
For New Zealanders, playing sport and exercising were the main ways to deal with stress, with 80 per cent of participants citing this as their key strategy, while 36 per cent of kiwis included DIY as a stress reliever and 23 per cent cited shopping.
New Zealand bosses ranked seventh out of the 40 countries surveyed for their ability to delegate work to employees, coming in well ahead of Australia, the US and the UK.