Staff turnover in New Zealand is on the rise with more workers willing to change jobs.

The latest Hays Salary Guide showed voluntary staff turnover had risen in almost a quarter of the 419 organisations surveyed.

The increasing number of resignations is being put down to factors such as an ageing workforce, reduced loyalty and rapid organisational change.

The results affirm what was shown in the annual New Zealand Staff Turnover survey earlier this year.

It showed that the national average turnover for 2015 was 18.4%, the highest rate since 2008.