In order to establish discrimination, a Claimant must establish that they have been treated differently to a comparator whose circumstances are materially the same to their own (with the only difference being a protected characteristic such as age, race, disability etc). In Lockwood v. DWP, an age discrimination case, the Court of Appeal gave short shrift to the suggestion that there was a material difference between groups of workers (and therefore no comparator) on the basis of circumstances intrinsically linked to age.

In Croft Vets Ltd v Butcher, the Employer Appeal Tribunal found that an employer should have agreed to pay for private psychiatric counselling for an employee who was suffering from work-related stress to help her return to work.

Ms Little worked as a full time sales executive for Richmond Pharmacology. Richmond required all its sales executives to work full time to provide high customer service.