Examples of homeostasis include the regulation of body temperature, the pH of extracellular fluid, or the concentrations of sodium, potassium and calcium ions as well as that of glucose in the blood plasma, despite changes in the environment, diet, or level of activity.
Blue-collar workers perform labor jobs and typically work with their hands. The skills necessary for blue-collar work vary by occupation. Some blue-collar occupations require highly skilled personnel who are formally trained and certified.
White Collar Exemptions Under the Fair Labor Standards Act. The Fair Labor Standards Act was enacted to protect workers by establishing a federal minimum wage and a 40-hour workweek, with a requirement to pay overtime after 40 hours. Some employees, however, can be exempt from minimum wage, overtime or both.