As an employer, it is your responsibility to manage any health and safety risks before your staff can work alone, including anyone contracted to work for you and the self-employed.
A Lone worker is classified as someone working by themselves and without close or direct supervision resulting in a greater risk if things go wrong.
The HSE free to download leaflet provides guidance to employers on how to keep lone workers healthy and safe along with a new video setting out the key advice, with animations to help explain how lone workers should be protected