Service workers who rely on tips are at greater risk for depression, sleep problems and stress compared with employees who work in non-tipped positions, according to a new US national study (N = 2,815 women and 2,586 men).

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Service workers who rely on tips are at greater risk for depression, sleep problems and stress compared with employees who work in non-tipped positions, according to a new US national study (N = 2,815 women and 2,586 men).