... Health Open AccessResearchUnderstanding informal payments in health care: motivation of health workers in TanzaniaSilvia Stringhini*1,2, Steve Thomas1, Posy Bidwell1, Tina Mtui3 and ... reputation of the category of health workers and of the hospitals involved.Informal payments, motivation and retentionThe analysis of the perceived relationship between infor-mal payments, and motivation ... issue for the health system in the opinion of health workers; second, toassess whether and how informal earnings help boost health worker motivation; third, to understand in whatways informal payments...