According to a study by Croner, retail sales staff are more likely to face age discrimination than workers in other professions.
The survey was conducted among 10,000 human resources directors and managers at businesses of all sizes across many sectors.
Sixty per cent said that employers made retail appointments based on a persons age. Second in the rogues gallery of ageism was the construction industry, with 50% claiming the sector's 1.4 million workers are hired based off their perceived youthful stamina.
New age discrimination regulations will take effect later this year.