One in every five American workers will be over the age of 65 by 2015, and one in four Americans will be over 55 by 2020, according to NIOSH’s webpage “Healthy Aging at Work” established in March 2014.1
Normal physiological and biological change occurs as people age. Strength begins to decline at age 30. Eye sight and hearing diminish. Reflexes slow. Coordination slows. Metabolism slows. Oxygen utilization is less efficient. Bladder control is less efficient. Bones are more brittle. The immune system is weaker. Chronic impairments e.g. arthritis increase. Stability is less.