Methodology
Year cycle: Calendar year
Note: Overseas movements for 2018 are not reported as 2019's overseas spells records are incomplete, meaning we cannot see return dates for many trips and cannot distinguish whether they are short term holidays or long term spells.
Workforces are defined from IRD tax records each year. These workers are matched to the regional council they have spent the most time in over the year they are working as well as the following year, regardless if they are still working in the industry. Flows of workers are tracked between these regions.
Access to the data used in this study was provided by Stats NZ under conditions designed to give effect to the security and confidentiality provisions of the Data and Statistics Act 2022. The results presented in this study are the work of the author, not Stats NZ or individual data suppliers.
These results are not official statistics. They have been created for research purposes from the Integrated Data Infrastructure (IDI) which is carefully managed by Stats NZ. For more information about the IDI please visit https://www.stats.govt.nz/integrated-data/.
The results are based in part on tax data supplied by Inland Revenue to Stats NZ under the Tax Administration Act 1994 for statistical purposes. Any discussion of data limitations or weaknesses is in the context of using the IDI for statistical purposes, and is not related to the data's ability to support Inland Revenue's core operational requirements.
