Developing effective employee motivation scheme becomes one of the major challenging tasks in manufacturing firms. The general objective of this study is to investigate the effect of different factors that influence the effectiveness of employee motivation in the case Finfine Furniture Factory Plc. The study primary goal is to examine the effect of leadership style on the effectiveness of 3F employee motivation. Descriptive and Explanatory research design was adopted in this study. To obtain more relevant information, the researcher used both primary and secondary of data collection methods. A total of 190 people took part in the survey. The researcher employed a mixed study approach such as quantitative data was used by Likert scale questionnaires. Probability sampling and stratified sampling techniques were used to calculate the sample size. The findings revealed that the leadership style had a significant relationship with the company's employee motivation effectiveness. Based on the regression analysis, 55.3% of the variations of output explained by democratic leadership style, 21.8% of the variation in the output explained by lassiez fair leadership style and 18.5 of the variation explained by autocratic leadership style. As a result, the effect of leadership style was found to be responsible for 70.3% of the variation in employee motivating effectiveness. Thus, the study recommended that the organization pay more attention to leadership style in order to boost employee motivation