This essay delves into the comparative effectiveness of unionization versus alternative forms of employee participation in human resource management. It explores the concept of employee involvement in organizational decision-making, highlighting various methods such as profit sharing, co-ownership, suggestion schemes, and trade unions. The essay emphasizes the significance of unionization, detailing its roles and responsibilities in representing employees, mediating between management and workers, and advocating for improved working conditions. It examines the benefits of unionization at political, social, and economic levels, including its influence on legislation, job security, and equal opportunities. Furthermore, the essay analyzes the functions of trade unions, encompassing fraternal support and militant actions, and underscores the importance of collective bargaining, negotiation, and, when necessary, methods like strikes to protect employee rights. The essay also discusses the advantages and disadvantages of unionization for both skilled and unskilled workers, and provides a case study of Singapore's trade union congress to illustrate the positive impacts of unionization on employers and employees. It contrasts unionized and non-unionized forms of participation, highlighting the limitations of the latter, particularly in terms of militant functions and dispute resolution, ultimately concluding that unionization is a more effective means of employee participation.