Rhode Island's employee happiness score was 46 per cent higher than the national average, determined by employees' likelihood to recommend their workplace.
The top five states for employee happiness were Rhode Island, Maine, Hawaii, Arizona, and Alaska, with New Hampshire recording the lowest score.
The research indicates that employee happiness is largely shaped by labor-market dynamics, including opportunity and mobility, rather than geographical or economic factors.
States with higher employee happiness typically showed 'ideal stability' or 'healthy dynamism' in their labor markets, unlike those with lower scores which had 'acute attrition' or 'hidden risk'.