Quarantines and PPE: Unmasking the COVID-19 rules at work

It is inevitable that virtually every business will have an employee with a positive COVID-19 result. Some employees will have had symptoms while others will not.
What should a business do next?
Let’s look at hypothetical Company X, which was recently advised that employee Jack had a positive test result and his co-worker, Jill, had no symptoms but also had a positive test result. Now Jack and Jill both want to come back to work. How should the company decide if either or both Jack or Jill