Task: Question Answering
Input (English): Passage: Richard "Richie" Twat and Edward "Eddie" Elizabeth Ndingombaba run the worst guest house in the United Kingdom. Their staff include a chef, an idiotic drunkard and an illegal immigrant who is unable to cook, and a waiter, whom Richie believes has checked into a psychiatric hospital (Or more likely getting a new job). Both leave because of nonpayment for their employment, with the latter quitting because of the verbal abuse from his boss. The guests, including Mr Johnson, who reside in the pair's hotel are thoroughly dissatisfied by the poor service, and eventually decide to leave, except for Mrs Foxfur who lives there.
Life seems bleak for Eddie and Richie, until it seemingly improves with the arrival of the "Nice family", headed by Mr Nice, and the famous Italian actress Gina Carbonara.  Gina's decision to stay in the grotty house is primarily down to her need to seek safety from her ill-tempered fiancé Gino Bolognese. However, thanks to the pair putting her names in lights outside the guest house to attract more guests, Gino eventually finds her. Forced to cook meals for the guest, Richie comes across some fish which fell off a military lorry, heading away from the nearby nuclear power station. Unknown to both him and Eddie, the fish had been contaminated by a radiation leak due to the power station's poor maintenance. 
Question: What are the positions of the people who leave because of nonpayment?
Output (English): waiter.