Levy Mayer organized the Illinois Manufacturers’ Association and spearheaded the fight against the factory inspection law and Florence Kelley and her staff. A
In Ritchie v People (1895) the courts ruled in favor of an 8-hour working day limit for women employed in factories, workshops, and similar establishments. Although the Illinois Supreme Court struck down the ruling as unconstitutional, finally in Muller v. Oregon (1908), the U.S. Supreme Court upheld a law limiting women's working hours, relying heavily on evidence that long hours harmed women's health.
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| Levy Mayer, attorney (R) with Armour, J. Ogden. 1918 [Source: Harris & Ewing Library of Congress] |


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![Civil rights movement demonstrators at the county courthouse, Montgomery, Alabama Amid rain, a large crowd of demonstrators gathers in front of the county courthouse in Montgomery, Alabama where Martin Luther King Jr. meets with city and county officials regarding police brutality during the previous day's peaceful march, March 17, 1965. [Credit: Chicago History Museum, ICHi-075006; Declan Haun, photographer]](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiVf8n-pwxBrldxWGDcvTt4vVAeCWpZ_q6VYBR3DKlwMIpsYk-qiaBR7Fg-GeiZ1YvyQkhHVx4iMNcym5X0SyNnbGScV3jbr8IR-PO-ZgRlkLZhhPTXidt8NYu24DNeztgHPsc90GRDzNBDA_q0D86UzzVLYM9bnrBfWKqSEnxQ1MF8YfcYPEyYBB0GuBs/w400-h280/ICHi-075006.jpg)





