The service sector demands a more sophisticated human resource management (HRM) approach and relationship management (CRM) techniques for significant organizational performance and financial stability in the long run. This study proposes multi-disciplinary study that examines the relationship between HR practices, the effectiveness of CRM and financial sustainability in organizations operating in service sector. The main purpose of the research is to examined the relationship between strategic HRM practices and customer relationship management; and the relationship between strategic HRM practices and integration of HRM and CRM processes in achieving sustainable financial performance. The study is conducted by a qualitative research methodology and concepts based study using secondary data which is obtained from open access academic sources, peer reviewed journals and HRM, CRM, sustainability management related organizational studies.

The results of the study have shown that HR practices like employee training, employee performance management, employee engagement, and leadership development have a significant effect on quality of service, employee productivity and customer oriented behaviour. The study also shows that the effectiveness of the CRM is largely dependent on the competence of employees, the corporate culture and the level of service delivery. It was perceived as an important factor in service organizations for customer satisfaction and customer loyalty to contribute to long-term financial sustainability. Another major finding of the study is the positive relationship between HRM and CRM strategies and other three outcomes: organizational resilience, customer retention, and competitive advantage.

It is concluded that financial sustainability in service sector organisations is not possible with the adoption of short-term profit oriented strategies. Rather, a sustainable organizational growth needs integrated management methods in which Workforce Development, Customer Relationship Management (CRM), and Strategic Adaptability are integrated. The study has made a significant contribution to the current literature by establishing a multi-disciplinary link between the management of employees, customer satisfaction and financial sustainability of modern service organizations.The study also proposes and conceptually validates five research hypotheses linking HRM practices, CRM effectiveness, customer satisfaction, and financial sustainability..