IBM OS/400 (OS400)
UK > UK excluding London
The table below provides summary statistics and contractor rates for jobs advertised in the UK excluding London requiring OS/400 skills. It covers contract job vacancies from the 6 months leading up to 30 October 2025, with comparisons to the same periods in the previous two years.
| 6 months to 30 Oct 2025 |
Same period 2024 | Same period 2023 | |
|---|---|---|---|
| Rank | - | 356 | 406 |
| Rank change year-on-year | - | +50 | - |
| Contract jobs citing OS/400 | 0 | 3 | 4 |
| As % of all contract jobs in the UK excluding London | - | 0.018% | 0.019% |
| As % of the Operating Systems category | - | 0.11% | 0.11% |
| Number of daily rates quoted | 0 | 3 | 4 |
| 10th Percentile | - | £504 | £517 |
| 25th Percentile | - | £540 | £519 |
| Median daily rate (50th Percentile) | - | £600 | £531 |
| Median % change year-on-year | - | +12.94% | - |
| 75th Percentile | - | - | £559 |
| 90th Percentile | - | - | £577 |
| UK median daily rate | - | £540 | £531 |
| % change year-on-year | - | +1.65% | - |
All Operating Systems
UK excluding London
OS/400 falls under the Operating Systems category. For comparison with the information above, the following table provides summary statistics for all contract job vacancies requiring operating system skills in the UK excluding London.
| Contract vacancies with a requirement for operating system skills | 2,824 | 2,829 | 3,652 |
| As % of all contract IT jobs advertised in the UK excluding London | 17.02% | 16.85% | 17.57% |
| Number of daily rates quoted | 1,800 | 1,679 | 2,386 |
| 10th Percentile | £170 | £185 | £160 |
| 25th Percentile | £219 | £268 | £220 |
| Median daily rate (50th Percentile) | £413 | £445 | £450 |
| Median % change year-on-year | -7.30% | -1.11% | - |
| 75th Percentile | £538 | £565 | £575 |
| 90th Percentile | £609 | £638 | £675 |
| UK median daily rate | £450 | £475 | £490 |
| % change year-on-year | -5.26% | -3.06% | -2.97% |
| Number of hourly rates quoted | 287 | 201 | 293 |
| 10th Percentile | £13.98 | £16.25 | £14.18 |
| 25th Percentile | £17.35 | £21.25 | £17.72 |
| Median hourly rate | £22.56 | £53.00 | £27.50 |
| Median % change year-on-year | -57.43% | +92.73% | +22.22% |
| 75th Percentile | £43.75 | £68.75 | £65.00 |
| 90th Percentile | £67.00 | £70.00 | £76.53 |
| UK median hourly rate | £24.00 | £52.50 | £33.50 |
| % change year-on-year | -54.29% | +56.72% | +36.73% |
OS/400
Job Vacancy Trend in the UK excluding London
Historical trend showing the proportion of contract IT job postings citing OS/400 relative to all contract IT jobs advertised in the UK excluding London.
OS/400
Daily Rate Trend in the UK excluding London
Contractor daily rate distribution trend for jobs in the UK excluding London citing OS/400.
OS/400
Hourly Rate Trend in the UK excluding London
Contractor hourly rate distribution trend for jobs in the UK excluding London citing OS/400.
