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.
Last month, the U.S. Department of Labor (DOL) unveiled a bold proposal to raise the threshold salary level for white collar employees to be exempt from overtime, from $455 per week to a figure the DOL estimates will be $970 per week â $50,440 annually â by the time final regulations are issued.