Workers should never be discriminated and it’s not only in the case of sickness but also other forms of discrimination which many include gender, race, ethnicity, age among other forms of discrimination. So in this case; the role of HR is to ensure that his workers are not discriminated at all.
So for the HR to be quite effective in this case the HR should be in a position to ensure that workers rights have been protected and no particular worker should be discriminated simply because he or she is sick. Now for the case of this HIV positive chief chef, it’s the role of the HR department to ensure that this particular worker is not fired simply because he is sick. He should ensure that the business ethics have been observed through transferring this particular employee in to another department.