Any regulations pertaining to an employee's personal belongings would be those made by the employer, not by local, state or federal government agency.
There are laws both state and federal that pertain to the physical safety of employees while they are performing assigned work duties at or outside of the work place.
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http://www.law.cornell.edu/constitution/constitution.articlei.html#section8 The Congress shall have power [...] To promote the progress of science and useful arts, by securing for limited times to...
well as delicate as i can make it, it doesn't come out the pee hole nor does it come out the pooh hole. so you get 2 chances to figure out where the blood that cleans the out your birth canal comes...
In the US, there is no legislation that addresses the temperature of a workplace, unless you consider the General Duty Clause of the Occupational Safety and Health Act.