Acas has been named the best public sector employer by the Employers Network for Equality and Inclusion (enei).
The workplace expert also won the Pay Gap award and a highly recommended award in the Disability Confident sector at the event hosted by the Law Society on 2 July.
This year the judges reviewed entries across 22 categories, with Acas competing against organisations such as the Home Office, The Telegraph and the NHS.
Celebrating diverse and inclusive workplaces
The awards are enei's opportunity to recognise organisations achieving diverse and inclusive workplaces and celebrate the teams and individuals who are making a difference.
Acas Head of Diversity, Julie Dennis, said:
"We are truly delighted to be recognised by the industry experts in diversity and inclusion. To have won not one but three awards puts paid to all of the hard work that our hugely talented teams and individuals have done to make Acas the inviting and inclusive place to work that it is.
"Diversity and inclusion is integral to every part of Acas and informs all the work that we do. We will continue to strive to be the exemplar of workplace diversity and inclusion and we look forward to helping workplaces across the country benefit from the value a diverse and inclusive workforce brings."