This study examined the enhancement of Third-Country National (TCN) talent retention and employment permit compliance through a management consultancy approach for businesses in Nigeria. The growing demand for foreign professionals in sectors such as oil and gas, construction, telecommunications, healthcare, and manufacturing has increased the need for organizations to effectively manage expatriate employees while complying with immigration and labour regulations.

The study was anchored on Strategic Management Theory and the Resource-Based View (RBV) Theory. It explored the challenges organizations face in retaining TCNs, assessed employment permit compliance issues, and examined the role of management consultancy in improving workforce management practices. Findings revealed that TCN retention is influenced by factors such as immigration and regulatory challenges, cultural integration difficulties, workplace inclusion, economic conditions, and organizational retention strategies. The study further found that management consultancy contributes significantly to improving compliance systems, strengthening human resource practices, enhancing employee engagement, and supporting workforce stability.

The study concludes that effective retention of Third-Country Nationals and employment permit compliance require a strategic combination of sound human resource management, regulatory compliance mechanisms, and professional consultancy support. It recommends that organizations adopt structured retention programmes, strengthen permit monitoring systems, promote diversity and inclusion, and engage management consultants to improve workforce management practices. Furthermore, government agencies should streamline permit administration processes and provide support mechanisms to enhance organizational compliance. These measures will contribute to improved organizational performance, workforce stability, and sustainable business growth in Nigeria.

Keywords: Third-Country Nationals, Talent Retention, Employment Permit Compliance, Management Consultancy, Human Resource Management, Organizational Performance, Nigeria.