There are complex rules on trade union recognition and the process that must be followed before a union can become “recognised” by a business. Once formally recognised, the business will be under an obligation to consult with that union in relation to any collective bargaining or consultation (such as on collective redundancy).
On an individual level, trade union representatives provide representation and assistance to their members when they are dealing with grievance and disciplinary processes, can act as companions to those meetings and, advise on the terms of settlement agreements.
Workers and employees have the right to choose whether or not to join a union and are protected from unfair treatment and unfair dismissal by their employers on the grounds of union membership.