Who is Harry. from Last Exit to Brooklyn and what is their importance?

Harry is the main character in the Strike, which is the longest story in the novel. He is married to a woman called Mary and works in a steel factory. Though the author describes him as one of the worst workers in the company, he holds a valuable position as a trade union steward, making it almost impossible for the management to sack him. Harry knows this and often leaves his work station to walk around and remind his fellow workers that their duty is towards the union and not the company.