Ironworkers, boilermakers in Japan earn on average ¥310,900 a month in base pay and ¥351,000 including overtime and allowances, plus ¥0.85m in annual bonuses: about ¥5.07m a year (2025; all occupations ¥5.46m). Average age 43.5, average tenure 12.1 years. Women's base pay is 74.9% of men's.
By sex
| Monthly base pay | Annual pay (est.) | Age | Tenure | |
|---|---|---|---|---|
| Men | ¥313,900 | ¥5.13m | 43.5 | 12.2 |
| Women | ¥235,100 | ¥3.42m | 44.0 | 7.2 |
By company size
| Company size | Monthly base pay | Annual pay (est.) |
|---|---|---|
| 1,000+ employees | ¥346,300 | ¥6.29m |
| 100–999 employees | ¥317,000 | ¥5.60m |
| 10–99 employees | ¥303,500 | ¥4.68m |
By age (monthly base pay)
| 19 and under | ¥221,400 |
| 20-24 | ¥223,000 |
| 25-29 | ¥263,600 |
| 30-34 | ¥288,100 |
| 35-39 | ¥310,800 |
| 40-44 | ¥340,300 |
| 45-49 | ¥332,600 |
| 50-54 | ¥338,100 |
| 55-59 | ¥361,000 |
| 60-64 | ¥304,600 |
| 65-69 | ¥330,400 |
| 70+ | ¥290,900 |
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 · Sheet metal workers · Metal engraving and surface treatment workers · Metal welding and fusion cutting workers · Other product manufacturing and processing workers (metal products)