New Coronavirus regulations have been made. If an employer has a worker who has tested positive for COVID-19 (or lives with someone who has tested positive), they are now responsible for stopping the worker from working (unless they can work from home). If they fail to do so, employers will face a fine, starting at £1,000.
As of midnight 28th September, in England only, the Health Protection Regulations 2020 set out mandatory periods for self-isolation, and a duty to notify the Secretary of State of the names of people in the same household as anyone who has tested positive for COVID-19.
The important element for employers is Regulation 7. This makes it an offence for an employer to knowingly permit a worker (including an agency worker) to attend any place other than where they are self-isolating; they must not be at work! This includes individuals who are required to self-isolate because they live with someone who has tested positive.
There is also an obligation on the worker to tell their employer that they are self-isolating (Reg 8) and anyone who breaches self-isolation will, normally, commit a separate criminal offence (Reg 11).