General-purpose, manufacturing, and business-use mechanical apparatus assembly workers in Japan earn on average ¥310,300 a month in base pay and ¥346,400 including overtime and allowances, plus ¥1.07m in annual bonuses: about ¥5.23m a year (2025; all occupations ¥5.46m). Average age 42.3, average tenure 14.9 years. Women's base pay is 78.8% of men's.
By sex
| Monthly base pay | Annual pay (est.) | Age | Tenure | |
|---|---|---|---|---|
| Men | ¥319,400 | ¥5.43m | 42.2 | 15.3 |
| Women | ¥251,600 | ¥3.91m | 43.1 | 12.3 |
By company size
| Company size | Monthly base pay | Annual pay (est.) |
|---|---|---|
| 1,000+ employees | ¥336,500 | ¥5.81m |
| 100–999 employees | ¥289,600 | ¥4.91m |
| 10–99 employees | ¥301,400 | ¥4.76m |
By age (monthly base pay)
| 19 and under | ¥214,700 |
| 20-24 | ¥239,000 |
| 25-29 | ¥261,900 |
| 30-34 | ¥283,000 |
| 35-39 | ¥312,500 |
| 40-44 | ¥337,100 |
| 45-49 | ¥350,500 |
| 50-54 | ¥356,500 |
| 55-59 | ¥375,700 |
| 60-64 | ¥289,900 |
| 65-69 | ¥269,700 |
| 70+ | ¥252,600 |
Basic Survey on Wage Structure 2025 (MHLW, published 2026-03-24). Full-time ("general") employees at private establishments of companies with 10 or more employees. Monthly pay is for June; bonuses are for the previous calendar year. Estimated annual pay = monthly contractual pay × 12 + annual bonus. Source: Ministry of Health, Labour and Welfare (MHLW), via e-Stat. Compiled and translated by The Hardest Market.
Other manufacturing process workers occupations: Pig-iron forging, steelmaking, non-ferrous metal smelting workers · Cast metal manufacturing and forging workers · Metal machine tools workers · Metal press workers · Ironworkers, boilermakers · Sheet metal workers · Metal engraving and surface treatment workers · Metal welding and fusion cutting workers