Yokohama has 486,471 non-regular employees when dispatched workers, part-time workers, and similar categories are combined, accounting for 33.8% of employees. At the same time, average annual income for households with two or more members is about ¥9.55 million. Because these figures come from different years and cover different populations, they cannot by themselves prove that a higher share of non-regular employment causes lower household income.
Yokohama employment and income indicators
| Indicator | Value | Definition |
|---|---|---|
| Regular employees | 952,414 | Employment-status category |
| Dispatched workers | 53,586 | Employment-status category |
| Part-time, casual, and other workers | 432,885 | Employment-status category |
| Total non-regular employment | 486,471 (33.8%) | Dispatched + part-time etc. / 1,438,885 employees |
| Average annual income, households with 2+ members | ¥9.552 million | 2019, household unit |
| Taxable income per taxpayer | ¥4.20 million | 2023, taxpayer unit |
The 33.8% non-regular share and ¥9.55 million household income do not describe the same households
Employment status is measured at the individual level for FY2020, household income is measured for households with two or more members in 2019, and taxable income is measured per taxpayer in 2023. The years, units, and populations are all different.
The 486,471 non-regular workers include primary earners, secondary earners in dual-income households, students, and older workers. The ¥9.55 million household-income average includes households with two regular employees, regular plus part-time combinations, self-employed households, and pension households. Correlation or causation cannot therefore be calculated from these aggregate figures alone.
A huge local-services economy exists alongside many different household types
Part-time and dispatched work is important in retail, food service, healthcare, care work, education, and logistics serving a city of roughly 3.78 million people. At the same time, regular employment in Minato Mirai and Shin-Yokohama, along with higher-paying professional and large-company jobs in Tokyo, pushes up household income.
Non-regular work can be supplementary income in one household and the main source of income in another. To test the relationship properly, data linking employment status, household size, and income within the same households would be needed.
How to read these figures
An earlier version reported a non-regular employment rate of 48.2%, but the denominator was incorrect. Using the official API total of 1,438,885 employees, the corrected figure is 33.8%. Unsourced occupation-specific annual income estimates have also been removed. Aggregate statistics cannot establish causation at the individual or household level.
Summary: Yokohama's aggregate data do not establish a causal link between non-regular work and household income
Yokohama's non-regular employment share is 33.8%, but these data alone do not tell us how that relates to the city's average household income of ¥9.55 million. What the figures do show is that diverse employment arrangements and high-income households coexist within the same very large city.
- Non-regular employment: 486,471 people, 33.8%
- Average annual income for households with 2+ members: about ¥9.55 million
- Taxable income per taxpayer: ¥4.20 million
- The years, units, and populations differ, so causal analysis is not possible
Source: Published statistics listed in the Analysis notes at the end of this article
📊 Analysis notes
This article is based on the following statistical data.
- Statistics used:
- Statistics Bureau of Japan, National Survey of Family Income, Consumption and Wealth (Household Income) (Table ID: 0003426439, view on e-Stat)
- Statistics Bureau of Japan, Social and Demographic Statistics System (Labour) (Table ID: 0000020106, view on e-Stat)
- Area: Yokohama
- Year: 2020
- Data retrieved: June 6, 2026
- Notes: The article is organized primarily around figures from published statistics. Because asset distributions, household differences, and other factors outside the article also matter, numerical values directly observable in the statistical tables should be distinguished from interpretation.
Chart and table values have been independently aggregated and visualized from the statistical data above.
Table values have been organized from the statistical data above.