Key points are not available for this paper at this time.
The incidence and effectiveness of different forms of employee voice were compared across three measures: perceived managerial responsiveness to employee needs, job control and influence over job rewards. Multiple regression analyses revealed that voice was perceived as most effective when an amalgam of different forms was present. The effective coexistence of different forms of voice challenges the notion that non-union voice acts as a substitute for union representation.
Pyman et al. (Fri,) studied this question.