Well, i don't know the exact details. What i do know is, he is getting paid, but his employer (telekom support call center) is still needling him to provide information on when he'd be back and how he's feeling about his health.
Maybe it's an oddity of MeckPomm, or something specific about cancer that allows this.
Can you provide an explanation as to why they'd be still on his case if he's not costing them anything?