Trade unions in India were formed to protect and promote the interests of workers. Their primary functions are representation in negotiations with employers over issues like wages, benefits, and working conditions. Trade unions are important for maintaining industrial peace through collective bargaining and effective communication between workers and management. They also play a role in economic development through recruitment, discipline in the workforce, and rational dispute resolution. However, trade union growth in India faces challenges from issues like workforce segmentation, employment instability efforts to cut labor costs, and the emergence of non-union firms.