When leader-member exchange leads to knowledge sharing: The roles of general self-efficacy, team leader modeling, and LMX differentiation

When team members retaliate: The effect of LMX differentiation on team CWB

Leader-member exchange (LMX) differentiation, or a leader's differentiated treatments among team members, is a prevalent phenomenon in any type of organization due to constraints of personal, social, and organizational resources. Despite numerous empirical examinations of such phenomenon, the impact of LMX differentiation on group outcomes is inconsistent and inconclusive. Based on team diversity framework, we approach LMX differentiation as disparity and draw on social comparison theory and social exchange theory to examine the positive effect of LMX differentiation on team counterproductive work behavior (CWB) through a supervisory justice climate. In addition, we investigate leader competence as an essential boundary condition that influences the impact of LMX differentiation on supervisory justice climate and subsequent team CWB. Using a sample of 94 teams in South Korea, we found that LMX differentiation negatively impacts supervisory justice climate, subsequently promoting team CWB. Furthermore, when team members perceive their leader as incompetent, the positive impact of LMX differentiation on team CWB is strengthened. Theoretical and practical implications and directions for future research are discussed.

Do overqualified employees hide knowledge? The mediating role of psychological contract breach

Although the negative effects of a sense of overqualification on organizations and individuals have been examined, it is debatable whether overqualified employees hide knowledge. Relying on the social comparison theory and psychological contract theory, this paper tried to investigate the non-linear relationship between perceived overqualification and knowledge hiding via psychological contract breach by surveying employees with bachelor’s degrees or above and eventually recruited 475 participants. The results indicated that psychological contract breach acts a partial mediating role in the inverted U-shaped relationship between perceived overqualification and knowledge hiding, while leader-member exchange acts as a moderator. The finding manifests that overqualification encourages employees to hide knowledge, but their possibly vigorous aspects will be displayed when a certain limit is exceeded. This study benefits organizations by advising them to dialectically treat and properly place overqualified employees and contributes to the research on overqualified employees’ knowledge management by offering a new explanation and complete understanding of perceived overqualification and knowledge hiding, with specific focus given to the psychological states of employees.

Paternalistic Leadership and Safety Participation of High-Speed Railway Drivers in China: The Mediating Role of Leader-Member Exchange

This research aimed to examine the effects of paternalistic leadership on the safety participation of high-speed railway drivers. Survey data were collected from 601 drivers in major Chinese rail companies. Structural equation modeling was conducted to analyze the influence of paternalistic leadership on safety participation via leader–member exchange (LMX). The results indicated that moral leadership directly promotes safety participation. Besides, benevolent leadership was positively associated with safety participation. Also, LMX partially mediates the positive relationship between benevolent leadership, moral leadership, and safety participation. Therefore, paternalistic leadership promotes the safety participation of high-speed railway drivers.