A supervisor's behaviour may not be the only factor that determines the performance of team members (Kerr & Jermier, 1978). Taking this postulation as a basis, we formulated a model to describe how service climate moderates the effects of the leadership behaviour of supervisors. When the organization and working environment are not conducive to providing a good service to colleagues and customers, the supervisor's leadership behaviour makes an important difference. However, when the service climate is good, a supervisor's leadership behaviour makes no substantial difference. This hypothesis was supported in an examination of the service quality of 511 frontline service providers as ...