The study aims to examine the relationship between two interdisciplinary models, viz. Guest High-Performance Work Systems (HPWS) model and Service Quality model. The attempt has been made for the very first time to study the integration of these two models and their outcome in the Telecom Industry at Sultanate of Oman. The interdisciplinary study integrates the HPWS factors viz. Employee motivation, Employee Commitment, Employee competency and opportunities to contribute to the overall Service Quality in the Telecom Industry of Oman. The data were obtained from randomly selected 300 Customer Care Executives working in the telecom companies and 300 customers using telecom services in Oman. The result of this study suggests that the integration of these two models exhibits a very strong positive correlation between HPWS and Service Quality provided to the customers in the Omani telecom industry. The HPWS components of Guest(2006b) model: viz. Employee competence, employee commitment, motivation and opportunity to contribute have a significant positive impact on overall service quality delivered by Customer Care Executives working in Telecom Companies in Oman. The findings of this paper will present an opportunity to telecom companies and managers to develop and implement High-performance work practices for effective delivery of Service quality to customers of Telecom companies in Oman.