Work Capability Assessment
If you have applied for Employment and Support Allowance (ESA) because you are not well enough to work, the Department of Work and Pensions (DWP) have to decide whether you do qualify for this benefit. The test they use to decide this is called the Work Capability Assessment (WCA).
Starting from March 2011 until March 2014, if you are currently receiving Incapacity Benefit, Income Support (on the grounds of disability) or Severe Disablement Allowance, you will be asked to go through the WCA rather than the Personal Capability Assessment. You should receive a telephone call and letters from the DWP to explain what and whythis is happening.