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Environmental ergonomics is dynamic effects of workplace environment to worker productivity. Rice distribution center is a value-added agro-industrial warehouse to support supply chain. Environmental ergonomics must be designed to achieve worker ergonomics and value-added of stored rice. The research objectives was to analyze effect of work capacity, workload and workplace environment to worker productivity. The samples were the 8 (Eight) workers in a sack-opening station. Work station capacity were 131.718 sacks per hour. Research hypothesis stated productivity could be influenced by 7 (Seven) variables as 1) age; 2) work experience; 3) workload; 4) workplace temperature; 5) relative humidity; 6) light intensity; and 7) noise. Based on test of independent variables, age, workload and temperature have significant relationship. 11 (Eleven) regression models were conducted to test the variables. The best model was selected based on adjusted R Square, standard error of the estimate, and value on t statistical test. The research results indicated the best model of Hyperbolic with adjusted R square of 0.754. It can be concluded that 75.4% productivity variation could be explained by all variables while 24.6% by other cause. This results confirmed our previous results that workplace environments influence the worker productivity in agro-industry.