The purpose of this paper is to analyse the impact of employee’s perception of HRM system strength and high performance work practices based on ability enhancing, motivation focused and opportunity creating practices on affective commitment. Furthermore, this paper explores the mediation effect of the line manager's ability, motivation, and opportunity to implement human resource practices between the high performance work practices, perception of HRM system strength, and affective commitment. This study is based on a quantitative research design. Data collected from 761 bank employees from different branches of private banks in Pakistan. A structural equational modeling technique was used to analyse the data. The result supported the positive impact of ability, motivation, and opportunity enhancing high performance work practices and HRM system strength on affective commitment. However, the mediation results indicated partial acceptance. The findings of this paper are expected to encourage researchers to be more thoughtful about the connection between these variables.

Keywords: High Performance Work Practices, HRM System Strength, Line Manager Role, AMO Framework, SHRM Practices.