Solution number one is to do nothing. When the first diseased employee appears, the director decides that it is not terrible and does nothing.
Very soon, the disease will affect every employee. Production will stop and the company will begin to suffer gigantic losses.
Solution number two is to isolate the patient. When the first diseased employee appears, the director decides to isolate him from the rest of the staff and quarantines him. But that is not enough.
While there were no symptoms, the infected person communicated with colleagues spreading the virus. When you find out he is diseased, most employees will already be infected. There will be no one to work, contracts will not be executed, and the company will incur large financial losses.
Solution number three is to isolate all employees at once. When the first diseased employee appears, the director decides that all employees are already infected and quarantines the whole department.
Such a decision will protect employees who did not become infected, but you will become bankrupt very soon. Self-isolation and downtime will lead to losses.