The employment measure fell to 48.6 in March from 48.8 in February, the second month of contraction and in line with weaker manufacturers' employment intentions in the New Zealand Institute of Economic Research's latest quarterly survey of business opinion.
"This situation might reflect lower confidence to employ given, say, renewed concerns about trading partner growth, while satisfying demand from existing plant," Steel said. "If so, employment may well bounce back if demand growth remains strong."
The PMI showed the measure of production slipped to 55 in March from 56.5 in February, while new orders sank to 58.2 from 60.7, finished stocks slid to 55.5 from 57.2, and deliveries fell to 52.6 from 56.
Steel noted that New Zealand's PMI stands "head and shoulders" above similar indicators from major economies around the world. However he said Australia moved ahead of New Zealand in the latest period, following several years where New Zealand outpaced its larger rival.
"The 3.4 index point gap in March is the largest in Australia's favour since mid-2010," Steel said. "This is not necessarily a bad thing. Indeed, it might well be a good thing for New Zealand if it indicates a growth pickup in the Australian economy as a whole."
Australia is New Zealand's second largest goods export market after China, taking $8.39 billion of products in the year through February, behind the $8.77 billion of goods sent to China.