The study operationalized employee happiness into performance appraisal, lexible working hours, promotion, rewards, and recognition, income, peer and supervisor support, workload, and workplace environment. The data was collected from 319 employees working in Abu Dhabi and Dubai using a questionnaire "The effect of employee spirituality and emotional wellness toward the relationship between employee happiness and employee performance 2019". The indings were derived using Smart Partial Least Squares (PLS). The indings showed that performance appraisal, income, workplace environment, promotion, reward, and recognition, and peer and supervisor support are signi icant predictors of employee performance. Flexible Working Hours (FWH) and workload have insigni icant effect on employee performance. Findings were discussed and decision makers are advised to increase employee happiness among employees in UAE.