820 ILCS 230/1
Every owner or operator of a coal mine, steel mill, foundry, machine shop, railroad, or other like business in which employees become covered with grease, smoke, dust, grime and perspiration to such extent that to remain in such condition after leaving their work without washing and cleansing their bodies and changing their clothing, will endanger their health or make their condition offensive to the public, shall provide and maintain a suitable and sanitary washroom, with an adequate quantity of soap containing bland non-irritating detergents which effectively cleanse the skin, at a convenient place where employees are required to report for duty or are relieved from duty, in or adjacent to such mine, mill, foundry, shop, railroad or other place of employment for the use of such employees.
820 ILCS 230/1