A new entrant is classified as an individual who first starts working (earning income in IRD records) within a given sector (defined through employer ANZSIC 2006 codes). We take new entrants in the sectors we follow between the years of 2007 and 2017.
Within IRD data there is no available information on the number of hours worked, only income at a monthly level. Because of this, we only consider an employee to be employed in a given month if they earn more than the equivalent of 0.5 FTE (80 hours) on the minimum wage. Thus for 2007 (minimum wage of $11.25) only months with income over $900 count as employed.