At the time he was to hold the funeral for President Vargos' late wife, Tranquil Repose had been taken over by the Great Healer. Jobel considered himself Davros' most loyal servant, mainly because Davros used hidden security cameras to watch the staff.
A third-year student of his, Tasambeker, was very much in love with him, though he always insulted her. When he met Peri Brown, he became infatuated with her and made repeated advances on her, even though Peri made it clear she was repulsed by him.
Takis and Lilt, two other employees, came to Jobel with a plan to get rid of Davros, and he accepted. Davros, watching this event with Tasambeker, convinced her to kill him. She didn't want to though and tried to convince Jobel that Davros wanted him dead. She tried to explain that Davros lied as freely as Jobel picked up women. This led him to believe that Tasambeker was motivated by her attraction to him. He then proceeded to tear her down, insulting her and stating that his own mother would be more desirable.
Distraught, Tasambeker grabbed a syringe and killed Jobel, tearfully declaring her hatred for him. He died on the steps of the casket dais, his wig falling off as he died, and his killer was exterminated soon after. (TV: Revelation of the Daleks)