FIRE DIAMOND. People often notice a colored sign on a building called a fire diamond. Fire diamonds located on tanks and buildings indicate the level of chemical hazard located there. The four colors are blue, red, yellow, and white. The numbers superimposed over the colors rank the severity or danger, ranging from one to four, with four being the highest rating.
Minors aged 14 and 15 can work from 7:00 a.m. until 9:00 p.m. while 16- and 17-year-olds can be employed between the hours of 6:00 a.m. until 10:30 p.m. (11:30 p.m on Friday or Saturday or when not regularly attending school) for up to 48 hours per week of school and work combined.
The minimum wage law is enforced by the Wage and Hour Program under the Michigan Occupational Safety and Health Administration (MIOSHA). While minimum wage is set at $8.50 in January, there are still lower wage rates: employers can pay newly-employed teens between 16 and 19 $4.25 per hour for the first 90 days of their employment.