The suppliers of materials – the pipe shop, the locksmith shop, and the workshops for production of manuals and action parts – are located on the same premises as the builders, to allow for complete control over the quality of every part of their organs. Rieger has a long-standing interest in social justice, having been one of the first employers to give their employees health insurance and electric lighting in their accommodation in the opening years of the twentieth century. Manufacture of action parts for their organs is now undertaken mainly by handicapped people.