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 legal working age is the minimum age required by law for a person to work, in each country or jurisdiction. Some types of labor are commonly prohibited even for those above the working age, if they have not reached yet the age of majority.21 years of age to work as a bartender; 19 years of age to work as a server in a restaurant that sells alcohol; 18 is the minimum age to work in a liquor store or transport alcohol). Work hour restrictions: 1  Under 16: No person under 16 shall be employed: 2  During school hours except where specifically permitted.