When Szabo became overheated on the job, his foreman had coworkers take him home. Although Szabo was obviously having medical trouble, he indicated to the coworkers that they could leave, and they did. Szabo died soon thereafter from heat prostration; his family then sued Pennsylvania RR for negligence. What duty does the employer have towards the employee? Was the duty breached? What are the issues? What would be the likely outcome?