Gregory Boulware was a truck driver for 30 years before he retired in 2008 but went back to work in 2020 after he and his wife bought a house, NBC News reported. Those entering their retirement years are the first to rely primarily on 401(k) plans rather than traditional pensions, making them more dependent on their individual savings and market performance for security in retirement. The costs of groceries, housing, owning a car and insurance skyrocketed over the past several years, and many retirees never accounted for the dramatic cost-of-living increases.