This study looks in to the leadership styles effects upon the employees’ motivation at the headquarters of BGI Ethiopia PLC. The study’s main objective is to see how leadership style affects employee motivation in BGI Ethiopia, specifically St. George Brewery. For this purpose, the researcher employed research methods that aided in achieving the research objectives. Thus, a quantitative research design was used which entails the collection and analysis of appropriate data with the use of SPSS Version 20 software. This process utilized descriptive terms, Pearson and inferential statistics to facilitate decision making by using 128 survey questionnaires. The results shows that the relationship between transformational leadership styles with employee motivation was statistically significant have positive relationship. On the other hand Transformational leadership style and laissez-faire leadership style have statistically significant and moderate relationship. Inferring from findings it is recommended for the organization to use transformational leadership styles in administrative and office support roles and transactional leadership style in middle management levels and laissez faire leadership style in departments where project managers oversee everything and don’t necessarily need managers looking over them