ruck stability. Beverage cartons have been redesigned for easier handling. The total weight was decreased by substituting plastic for some glass containers. Ergonomic Solution (Benefits) Reduced risk factor exposure. Employee satisfaction. Improved physical and psychological comfort. Ergonomic Solution (Method Which Verified Effectiveness) Quantitative tests of heart rate, stress/fatigue levels and discomfort reports showed statistically significant improvements in physical and psychological comfort, providing scientific justification for the changes. ...