I was able to find that. From p. 366, it tells the story of Toni and Linda. The story predates the above WT article, but shows that it was already WT policy before 1987. The handling of Linda's case by the elders is unbelievable.
The doctor in the case mentions how he vets potential employees by asking them how they would have handled that situation and not hiring them if they would behave like Toni. Although a prudent approach, I see it as being fraught with danger, in light of anti-discrimination laws. In many countries, it is illegal to ask potential employees certain types of questions, including about the candidate's religion. The doctor's questions could be seen as a backdoor way of discriminating on the basis of religion.
Would it be better to simply not employ JWs because of the liability they represent? But how would you find out if they can't be asked about their religion? Are there other backdoor ways around it that might work? Tell them about the office birthday and Christmas parties and see how they react? Ask them what medical treatment and first aid they authorise in case of an accident that renders them unconscious? What other questions might work, without provoking suspicion that something unkosher is going on?