please reqd this study and answer the questions .

CASE STUDY 1 A STRESSFUL JOB joan is an emergency room nurse at a busy city hospital. She has always enjoyed the hustle of working in the ER and the challenges of dealing with the unexpected. However, lately, Joan has been worried about her own well-being. She has been very abrupt with her coworkers on several occasions and has had difficulty concentrating on her job. Though there have been no problems to date, Joan is worried that her deteriorating performance might cause a problem, given the critical nature of her work. Her doctor suggested that she take an extended leave because of her "nerves." As the HR representative, what do you think is going on here? Are Joan's concerns likely to be a result of stress? What stressors are present in the environment? If there are 20 employees in ER and Joan is the only one complaining, does this mean that her complaints are not real