That's what Caroline Melville, owner of virtual administrative service VirtuallySorted.com, had to do after hiring an accountant to work with her small team.
In the mornings, when Melville asked how he was doing, he would respond with a deadpan, "I am not dead yet."
If the company booked a new client and the office was celebrating their success, he would pipe in with, "Ah, I don't know. I don't know. He might leave."
The eternal optimist didn't stay long. He resigned when his wife got a new job and needed to move. But Melville didn't complain.
"It was quite a sigh of relief for me, actually, because it was quite stressful having someone like that in the office."
NEXT: Don't! Microwave fish in the office