IBM OS/400 (OS400)
UK
The table below provides summary statistics and contractor rates for jobs requiring OS/400 skills. It covers contract job vacancies from the 6 months leading up to 15 March 2026, with comparisons to the same periods in the previous two years.
| 6 months to 15 Mar 2026 |
Same period 2025 | Same period 2024 | |
|---|---|---|---|
| Rank | - | 507 | - |
| Rank change year-on-year | - | - | - |
| Contract jobs citing OS/400 | 0 | 4 | 0 |
| As % of all contract jobs in the UK | - | 0.013% | - |
| As % of the Operating Systems category | - | 0.094% | - |
| Number of daily rates quoted | 0 | 3 | 0 |
| Median daily rate (50th Percentile) | - | £374 | - |
| UK excluding London median daily rate | - | £375 | - |
All Operating Systems
UK
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.
| Contract vacancies with a requirement for operating system skills | 4,797 | 4,265 | 6,021 |
| As % of all contract IT jobs advertised in the UK | 11.09% | 14.35% | 13.54% |
| Number of daily rates quoted | 3,146 | 2,784 | 4,025 |
| 10th Percentile | £180 | £200 | £180 |
| 25th Percentile | £280 | £317 | £280 |
| Median daily rate (50th Percentile) | £447 | £475 | £450 |
| Median % change year-on-year | -5.89% | +5.56% | -12.62% |
| 75th Percentile | £565 | £600 | £588 |
| 90th Percentile | £656 | £699 | £700 |
| UK excluding London median daily rate | £413 | £448 | £430 |
| % change year-on-year | -7.82% | +4.07% | -9.47% |
| Number of hourly rates quoted | 352 | 157 | 405 |
| 10th Percentile | £15.02 | £16.60 | £13.29 |
| 25th Percentile | £17.69 | £18.51 | £15.50 |
| Median hourly rate | £22.81 | £28.00 | £22.50 |
| Median % change year-on-year | -18.54% | +24.44% | -15.09% |
| 75th Percentile | £60.00 | £63.75 | £59.50 |
| 90th Percentile | £70.00 | £68.75 | £70.00 |
| UK excluding London median hourly rate | £22.50 | £24.66 | £22.50 |
| % change year-on-year | -8.76% | +9.60% | -13.46% |
OS/400
Job Vacancy Trend
Historical trend showing the proportion of contract IT job postings citing OS/400 relative to all contract IT jobs advertised.
OS/400
Daily Rate Trend
Contractor daily rate distribution trend for jobs in the UK citing OS/400.
OS/400
Hourly Rate Trend
Contractor hourly rate distribution trend for jobs in the UK citing OS/400.
