Key to Pacific growth in its growing working age pop.

An increase in working aged people in the Pacific could bring unprecedented growth but only if they are utilised properly, a new report by the UN says.

The UN Development Programme report says Asia-Pacific countries now have more working-aged people and fewer dependents than at any point in history.

According to RNZI, the report recommends that states with younger populations invest in basic capabilities by moving to improve education and healthcare and improving the transition from school to work.

Countries with more working people are urged to create decent jobs, bring women into the labour market and channel savings into investments.

Older countries are being told they need to design fair, sustainable pension systems, support active ageing and promote appreciation for the value of older citizens.

The report also warns that failure to act on these recommendations could result in greater challenges for the region as countries' societies begin to age.