If Member of staff has contracted Covid-19 in the UAE, and has recently been in the workplace?
The relevant health authority covering your jurisdiction needs to be immediately informed; and if not this could potentially be a punishable offence accordingly.
It is the duty of not only a company but also for an individual to report anyone suspected of suffering from a communicable disease. Failure to do so may impose a three years jail sentence or fine of not more than AED 10,000/- to the violators, as per Federal Law No. 14 of 2014 on Combating Communicable Diseases.