https://www.cnbc.com/2019/04/13/older-workers-are-fastest-growing-labor-pool-and-the-least-protected.html

The fastest-growing segment of the American workforce is employees age 65 and older. The reasons are many. Over the past decade, real wage growth has stagnated, pensions have disappeared, workers are delaying claiming Social Security benefits to maximize payouts, and lifespans are longer, leaving seniors worried they will burn through their retirement savings way too soon.

According to a Gallup 2018 survey of 1,015 adults age 18 and older across the United States, 41 percent of participants who are not retired plan to leave the job market at age 66 or older, a figure that has risen from 12 percent in the 1995 study and 26 percent in 2004. This number will likely keep growing.