Millennials have officially overtaken Generation X as the largest cohort of managers in the American workforce in 2025. This generational handoff marks more than a demographic curiosity—it’s potentially a major shift in how organizations are led, as millennials have a different management style than their predecessors.
According to the semiannual Worklife Trends report by Glassdoor, millennials became the largest share of the managerial workforce in late June 2025, overtaking Gen Xers, who dominated leadership during the past two decades. At current aging trends, according to projections from Glassdoor lead economist Daniel Zhao, Gen Z will provide a greater share of managers than baby boomers in late 2025 or 2026. Already, Gen Z makes up one in 10 managers.
