What about fatism?
That's the poser from Kathy Halliday, employment partner at law firm Cobbetts.
As the number of obese people in the UK increases and media attention on obesity grows, employers need to ensure they are treating everyone fairly, regardless of their appearance, she warns.
"Although you don't hear about this type of discrimination everyday, I do think it is becoming an increasing problem.
"In addition, although obesity discrimination does not currently fall under any legislation, a potential remedy may be found in the Disability Discrimination Act. If it can be proved that the obesity is connected to a mental or physical disability, then it would be possible to use this legislation to help fight discrimination.
"For example if an employee is found to have heart disease or diabetes, which can be attributed to their obesity, then they will have rights under the Disability Discrimination Act."
She went on: "When recruiting, employers should be focusing on employing the right person for the job and not be influenced by other factors.
"We live in a society that demands that individuals conform to a stereotype and it is common to have public facing jobs that require the individual to have a certain image. I think we are moving forward though. It is interesting to note that the Army has recently increased the body mass index size requirements of new recruits they will accept as they realise that, by doing this, they may attract a wider range and potentially a higher calibre of applicant.
"If employers are concerned with obesity issues, they could consider introducing healthier practices to the work place, for example, healthy food could be served in the canteen or incentives to join a local gym could be promoted. When addressing the UK's situation on obesity, it is interesting to see the progress of other countries.
"For example, the US has already woken up to the huge problem of obesity and has implemented obesity discrimination laws.
"As a society, we have moved so far in the past fifty years, so employment law needs to evolve to keep up-to-date with the new issues we are facing. Within the next year I think the Disability Discrimination Act will change and list obesity as a type of disability, bringing in new rights for those needing it.
"In the meantime, it is essential for both employees and employers to be aware of the issues involved and aim to avoid any form of discriminatory behaviour in the workplace."