About us

The Centre for Health and Disability Assessments (CHDA) is a subsidiary of MAXIMUS, a leading global provider of government health programmes.


With 16,000 professionals engaged in a range of initiatives around the world, MAXIMUS helps governments, businesses and individuals to achieve their goals. We are delivering essential services to 35 million individuals, across 300 sites, in six countries. 

We bring innovative thinking and a caring attitude of partnership to every project. Supporting communities through the services we provide, we are passionate about the differences our efforts make in people’s lives. 

We take pride in providing programmes and services that are easy-to-navigate, friendly and effective. From expert medical advice, to health promotion strategies and clinical support, we help individuals and organisations to get the most out of life and work. 

About the CHDA

In the UK, we carry out Work Capability Assessments for the Health Assessment Advisory Service. We do this on behalf of the Department for Work and Pensions (DWP). 

These assessments are designed to develop understanding of the specific impact an individual’s long-term illness or disability has on their ability to work. They are an integral part of the process for claiming for Employment and Support Allowance (ESA). 

We work with people who have made a claim for ESA. We are often required to meet with them in person, to carry out assessments face-to-face. It’s our responsibility to explore each individual’s unique case - their needs, circumstances and capabilities. 

We deliver this important work from a network of 142 Assessment Centres across Great Britain. We report our findings to the DWP, who use the information to inform their decisions around individuals’ suitability for ESA. 

Our Customer Charter defines the way in which we work. We created it to ensure everyone is treated as an individual, with dignity and with respect.