An association of workers in a particular industry, firm or line of job is called
Answer Details
An association of workers in a particular industry, firm or line of job is called a "trade union". Trade unions are organizations that represent the collective interests of workers in negotiations with employers or government bodies. They work to protect the rights of workers and improve their working conditions, wages, and benefits. Trade unions also provide a platform for workers to express their grievances and work together to find solutions.