A.1 Health and education workforce mandates Ngā whakature mō te hunga kaimahi hauora me te mātauranga

A.1 Health and education workforce mandates | Ngā whakature mō te hunga kaimahi hauora me te 
mātauranga

Our analysis of the impacts of vaccine mandates on skilled workers in the education and health sectors in section 5.4 uses data from the Integrated Data Infrastructure (IDI). The IDI contains an anonymised dataset of information on individuals, employers and households from administrative and survey data. These data include the Census, surveys such as the Household Labour Force Survey, and tax data. Stats NZ link these data together and create a de-identified dataset for approved researchers to use in secure datalabs.

We use data on employment and earnings from the Fabling-Maré labour tables, derived from the IDI and the Stats NZ Longitudinal Business Database.⁶² The core information on which these tables are built is the confidentialised Employer Monthly Schedule record of monthly wage and salary earnings provided by firms to Inland Revenue, summarising all payments with tax deducted at source. A 'job' is a continuous monthly spell of wage and salary payments from an employer to an employee (treating one-month earnings gaps as continuous).

The industry of the employer comes from the Longitudinal Business Frame, a longitudinal representation of Stats NZ's Business Register. The Longitudinal Business Frame forms the backbone of the Longitudinal Business Database, to which all other firm-level datasets are linked. It captures basic information on all economically significant employers operating in New Zealand since 1999, including location, industry, business type, institutional sector, and parent-subsidiary relationships.

Data on individual worker characteristics come from a range of sources within the IDI, such as the Census, Department of Internal Affairs birth records, and Ministry of Business, Innovation and Employment border movement data.

We created a longitudinal panel of skilled workers that were employed in the health or education sectors and aged between 20 and 74 years in October 2021 (the month that mandates were announced). To workers in this panel, we linked vaccination data to information on employment, qualifications and occupation (from the Census) to identify teachers, doctors, nurses and other education and health professionals.

⁶² Richard Fabling and David C. Maré, Addressing the absence of hours information in linked employer-employee data. Working Paper 15–17, (Wellington: Motu Economic and Public Policy Research, 2015).