Supermarket giant Asda leads the way in employing older people, and is currently the UK's biggest employer of the over 50s. The group launched its policy about four years ago, handing out flyers at venues such as bingo halls encouraging retired people to apply for jobs.It said it employed older people as greeters, customer service staff, and car park and trolley attendants. It currently employs a 91-year-old man as a trolley attendant in Scotland who is believed to be the UK's oldest worker.