What characterizes an employment agreement that has been negotiated by a trade union for all workers?

An employment agreement that has been negotiated by a trade union for all workers is characterized as a collective agreement. This type of agreement is formed through collective bargaining, which involves the trade union representing a group of workers negotiating with the employer on their behalf. The collective agreement outlines the terms and conditions of employment, such as pay rates, working hours, benefits, and workplace rights, and it applies to all workers represented by the union rather than individual negotiations. This ensures that all members receive the same treatment and benefits as agreed upon in the negotiations, promoting fairness and equality in the workplace.