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.
There are only 1.2 million salaried white collar employees who work overtime and make less than $23,660 a year. Using the Departmentâs own estimates of the likelihood of exemption for such low-paid employees, fewer than one-fifth â about 250,000 â are likely to be exempt.