Employee Happiness as a Critical Driver of Productivity, Retention, and Long-Term Business Success in Tamil Nadu, India (A Geospatial and Statistical Analysis 2001–2025, Projections to 2045)

Abstract : This study presents a comprehensive geospatial and statistical analysis of employee happiness as a fundamental determinant of organisational productivity, workforce retention, and long-term economic growth in Tamil Nadu, India, covering the period 2001 to 2025. Using district-level data from the National Sample Survey Office (NSSO), Periodic Labour Force Survey (PLFS), and Reserve Bank of India (RBI), a composite Happiness Proxy Index (HPI) is constructed from real wage growth, healthcare access, and the Human Development Index (HDI). Pearson Correlation Analysis reveals a strong positive association between HPI and GSDP per capita (r = 0.84, p < 0.001), and a significant inverse relationship between HPI and attrition rates (r = −0.72, p < 0.001). The state's GSDP recorded a Compound Annual Growth Rate (CAGR) of 12.96% from ₹1.5 trillion (2001) to ₹24.8 trillion (2024). Geospatial analysis of all 30 districts using verified administrative boundary shapefiles reveals a pronounced north-south happiness gradient: the Industrial Crescent (Chennai, Kancheepuram, Thiruvallur) and Textile-IT Belt (Coimbatore, Erode, Tiruppur) sustain high HPI environments, while agrarian southern districts record persistently low scores driven by distress migration. Scenario-based projections model GSDP reaching ₹150 trillion by 2045 under sustained happiness investment. Policy recommendations focus on geographically redistributive wellbeing infrastructure, gig economy formalisation, and Silver Economy preparedness.