Executive Summary: The Employment Relationship Is Fracturing: What It Means for Employer-Sponsored Health Coverage
FWD.01 — The Changing Market#
The employer-sponsored insurance system was designed for a full-time, single-employer, multi-year worker. That worker is not disappearing, but the share of the workforce fitting that description is shrinking in ways that are demographic, technological, and economic, not cyclical.
The BLS Contingent Worker Supplement published in November 2024, based on July 2023 data, found 7.4 percent of all employed workers were independent contractors on their sole or main job. The figure undercounts the professional independent workforce because the survey captures a single reference week. MBO Partners reports 72.9 million Americans working independently in 2025, including 5.6 million earning more than $100,000 annually, up 19 percent from 2024 and 86 percent from 2020. The fastest-growing segment of the independent workforce is high-income professionals choosing independence, not being forced into it. The United States had 30.4 million nonemployer businesses in 2023, generating $1.8 trillion in receipts. Nonemployer business formation has outpaced employer business formation in almost every year since 2012. New business applications hit a record 478,800 per month in 2025, more than four times the pre-2020 average.
The 55 to 64 cohort is the strategic inflection. The Kauffman Foundation found that adults aged 55 to 64 started businesses at a monthly rate of 0.38 percent of the adult population, compared with 0.22 percent for the 20 to 34 cohort, in every year tracked. This cohort leaves corporate employment with accumulated savings and real capacity to pay for coverage. They are forming businesses with actual employees in the 1 to 10 range. They are a decade from Medicare. And AI-driven organizational restructuring is accelerating their displacement: a McKinsey Global Institute report published in November 2025 found that current AI technologies could automate approximately 40 percent of tasks in existing roles, concentrated in exactly the non-routine cognitive work, financial modeling, project management, strategic planning, that this cohort had held.
The coverage gap is measurable. HHS ASPE found 16.3 million self-employed workers aged 21 to 64 in 2022, of whom 2.9 million were uninsured, a rate of 17.9 percent, roughly 6 percentage points higher than the all-adult rate for the same age range. The BLS data confirms: 74.2 percent of independent contractors had health insurance in July 2023, compared with 84.9 percent of workers in traditional arrangements. That 10.7 percentage point gap, applied to 12 million independent contractors, represents over a million workers without coverage specifically because of their work arrangement.
AI is not primarily eliminating jobs in the professional workforce. It is eliminating the organizational layers that justified full-time employment. Five people whose roles were absorbed do not become unemployed. They become independent. None of the four client relationships they form offers group health benefits. The employment unit that the ESI system assumes has fragmented into relationships the coverage infrastructure has no mechanism to serve. This population is a market.