A trade union is a group of workers who join together to improve pay and working conditions. Their aims include better wages, pensions, safety, holidays and equality. Trade unions have the right to represent members in negotiations, recruit new members, and take industrial action like strikes or overtime bans if needed. However, they also have responsibilities to represent members reasonably and not pressure others to join. Union members can participate by paying fees, attending meetings, voting for officials, reporting issues, and taking part in actions like strikes if a majority votes in favor.