You asked

Does the definition of "employed" still include those only employed for one hour per week only?

If not when was this definition changed?

We said

Thank you for your recent enquiry.

The number of people in employment in the UK is measured by the Labour Force Survey (LFS). The LFS defines an employed person as anyone aged 16, or over, who has completed at least one hour of work in the reference week, or are temporarily away from his or her job, such as being on holiday. This definition of an employed person is in line with the International labour organization (ILO) definition of employment. In short, we can confirm that the definition of ‘employed’ has not changed recently and it still includes those employed for just one hour per week.