The Department for Work and Pensions has lost more employment tribunals for disability discrimination than any other employer in Britain since 2016.
BBC Panorama found the DWP lost 17 of 134 claims of discrimination against its own disabled workers from 2016-19 and it paid out at least £950,000 in both tribunal payments and out-of-court settlements in that time.
The DWP said it was "shocked" by the data but was reviewing its processes to ensure all staff were treated fairly.
It is the government department that is responsible for supporting people with disabilities into employment.
Of its 80,000 members of staff, 11,000 identify as disabled.