IBM OS/400 (OS400)
UK
The table below provides summary statistics for contract job vacancies requiring OS/400 skills. It includes a benchmarking guide to the contractor rates offered in vacancies that cited OS/400 over the 6 months leading up to 30 April 2025, comparing them to the same period in the previous two years.
| 6 months to 30 Apr 2025 |
Same period 2024 | Same period 2023 | |
|---|---|---|---|
| Rank | 515 | - | - |
| Rank change year-on-year | - | - | - |
| Contract jobs citing OS/400 | 4 | 0 | 0 |
| As % of all contract jobs advertised in the UK | 0.014% | - | - |
| As % of the Operating Systems category | 0.098% | - | - |
| Number of daily rates quoted | 3 | 0 | 0 |
| 10th Percentile | £365 | - | - |
| 25th Percentile | £368 | - | - |
| Median daily rate (50th Percentile) | £374 | - | - |
| 75th Percentile | £381 | - | - |
| 90th Percentile | £385 | - | - |
| 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 | 4,075 | 5,812 | 9,696 |
| As % of all contract IT jobs advertised in the UK | 13.94% | 13.33% | 16.25% |
| Number of daily rates quoted | 2,687 | 3,913 | 6,831 |
| 10th Percentile | £200 | £183 | £190 |
| 25th Percentile | £319 | £300 | £331 |
| Median daily rate (50th Percentile) | £475 | £468 | £505 |
| Median % change year-on-year | +1.50% | -7.33% | +1.00% |
| 75th Percentile | £594 | £588 | £638 |
| 90th Percentile | £699 | £700 | £719 |
| UK excluding London median daily rate | £450 | £450 | £475 |
| % change year-on-year | - | -5.26% | +11.76% |
| Number of hourly rates quoted | 177 | 397 | 416 |
| 10th Percentile | £16.25 | £12.75 | £14.25 |
| 25th Percentile | £18.13 | £15.50 | £17.75 |
| Median hourly rate | £24.18 | £22.00 | £39.30 |
| Median % change year-on-year | +9.91% | -44.02% | +74.67% |
| 75th Percentile | £62.50 | £60.00 | £65.00 |
| 90th Percentile | £68.00 | £70.00 | £75.00 |
| UK excluding London median hourly rate | £23.00 | £22.00 | £31.25 |
| % change year-on-year | +4.55% | -29.60% | +56.25% |
OS/400
Job Vacancy Trend
Job postings citing OS/400 as a proportion of all IT jobs advertised.
OS/400
Contractor Daily Rate Trend
3-month moving average daily rate quoted in jobs citing OS/400.
OS/400
Contractor Hourly Rate Trend
3-month moving average hourly rates quoted in jobs citing OS/400.
OS/400
Top 6 Contract Locations
The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing OS/400 within the UK over the 6 months to 30 April 2025. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.
| Location | Rank Change on Same Period Last Year |
Matching Contract IT Job Ads |
Median Daily Rate Past 6 Months |
Median Daily Rate % Change on Same Period Last Year |
Live Jobs |
|---|---|---|---|---|---|
| Work from Home | - | 4 | £374 | - | |
| UK excluding London | - | 3 | £375 | - | |
| North of England | - | 2 | £374 | - | |
| Yorkshire | - | 2 | £374 | - | |
| England | - | 2 | £374 | - | |
| Wales | - | 1 | £375 | - |
OS/400
Co-occurring Skills and Capabilities by Category
The follow tables expand on the table above by listing co-occurrences grouped by category. The same employment type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:
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