As a figure in the social realism movement, Hirsch avoided the caricature found in the work of his contemporaries. He preferred to depict urban life and labour with an empathetic perspective. His paintings, such as The Wedding or Two Men, often feature workers and musicians in moments of reflection. He used bold forms and a controlled colour palette to create a sense of physical presence. His compositions are often tightly framed, which forces the viewer to confront the subject directly.

Modern collectors value Hirsch for his ability to find interest in the mundane. His prints document mid-century American life through a clear, figurative style. His work lacks the aggressive political tone of some social realism, which makes it suitable for a variety of home environments. His focus on universal human experiences maintains the connection between the subject and a contemporary audience.