Nearly three million Americans over the age of 55 have entered the workforce over the last three years. Older workers joining or rejoining the workforce have helped the economy immensely, however, experts believe that this growth may be slowing down. Many companies are currently struggling to find employees due to a labor shortage. As a result of less available laborers, companies have had to increase wages- however, the wage increases may not be profitable for much longer.
See "Older workers helped fuel recent U.S. growth. Can it last?", Howard Schneider, Reuters, April 24, 2019