The kiwi dollar rose as much as a quarter of a cent aftre the news and was trading at US71.57c.
"The figures revealed a slightly stronger labour market than expected, echoing recent survey data highlighting tighter labour market conditions and growing concerns around labour shortages," said ASB chief economist Nick Tuffley.
"The data provide further evidence of how well the New Zealand economy has performed through the global pandemic, with the level of employment higher than pre-pandemic levels."
The result reinforced the sense that the New Zealand economy was past the worst of the Covid-19 shock, said Westpac chief economist Michael Gordon.
"The unemployment rate of 5.2 per cent in the September quarter last year will prove to be the [surprisingly low] peak in this cycle," he said.
"The implication is that while we're still below what the RBNZ would consider to be 'maximum sustainable employment' according to its mandate, the gap is gradually narrowing."
The seasonally adjusted number of people in unemployment fell by 5000 over the quarter, with the number of unemployed women falling by 8000, offset by an increase of 3000 men, Stats NZ said.
Over the year, 13,000 more people were unemployed – 9000 more men and 4000 more women.
Employment rose 0.6 per cent (quarter on quarter) beating estimates of 0.3 per cent.
The participation rate rose to 70.4 per cent versus estimates of 70.3 per cent.
The seasonally adjusted underutilisation rate increased to 12.2 per cent, up 0.4 percentage points quarterly and 1.8 percentage points annually.
Over the year, 56,000 more people were underutilised – equal numbers of whom were men and women – bringing the level up to 366,000.
Underutilisation is a broad measure of spare capacity in New Zealand's labour market and is just as important as the unemployment rate, as it gives us a more detailed picture of the workforce.
Over the year, 56,000 more people were underutilised – equal numbers of whom were men and women – bringing the level up to 366,000.
Wage growth remained steady.
The Labour Cost Index (LCI) increased 1.6 per cent in the year to the March 2021 quarter, with wage inflation remaining steady from last quarter.
This was the first quarter since the December 2019 quarter where annual wage inflation has not slowed.