The study was to examined the effect of employee’s extra role behavior on the performance of food and beverage of manufacturing firms in Enugu State. The specific objectives employee includes; employee’s Sportsmanship on the customer satisfaction and altruism of employees on the team performance of food and beverage of manufacturing firms in Enugu State. A survey of research design was adopted for the study. Data for the study was purely a primary source of data. The tool of analysis used is the SPSS v.20 with emphasis on correlation analysis (r), coefficient of determination (R2), F-test (ANOVA) and regression coefficients for fitting the model specifications. The result revealed that, employee’s sportsmanship has a significantly positive impact customer satisfaction at p-value (R=0.824, p-value<0.001); and altruism of employee has significant impact on team performance at p-value = (R=0.903, p-value<0.001) on the performance of food and beverage of manufacturing firms for the period. Based on the finding, the study concluded that employee’s sportsmanship, and altruism of employee all has significant impact on the performance of food and beverage of manufacturing firms for the period. The study recommences that, employees should sustain the employee sportsmanship and altruism as a means of holding on to the significant impact it has on customer satisfaction and team performance in order to enhance the firm overall performance.