"In an increasingly global and mobile marketplace, it's vital New Zealand doesn't fall behind the rest of the world when it comes to having balanced leadership teams in organisations, whether large or small.
"While we have traditionally embraced diverse working environments, New Zealand employers must ensure we remain competitive locally and internationally, otherwise we risk losing our top talent overseas, or to a competitor," he said.
The key was for business leaders to "recognise, develop and reward" the best person for the leadership role every time.
"If the best decision is made regardless of gender, the balance will naturally follow."
However, the survey found nearly 70 per cent of companies here were active in encouraging women employees to pursue leadership positions. This compared to only 57 per cent of employees globally who said their employer encouraged women to pursue promotional opportunities.
New Zealanders were also overwhelmingly in favour of diverse management teams with 88 per cent saying they believed in balanced leadership groups.
But only 46 per cent thought a quota system was a good idea, lower than the global average of 57 per cent.
By the numbers globally:
Percentage of workers who report women making up at least half of leadership positions:
* New Zealand - 37 per cent
* United Kingdom - 43 per cent
* Singapore - 47 per cent
* United States - 48 per cent
* China - 48 per cent
* Hong Kong - 54 per cent
* Italy - 58 per cent
* India - 63 per cent