One in three U.S. workers is 'disposable' - and the biggest slice sits inside your own headcount

A labor economist writing in Fortune says employers now treat more than one in three American workers as disposable: just under 57 million full- and part-time people out of a workforce of 162 million ^[3]. That figure matters less as a headline than as an accounting problem, because the largest component of it never appears on a vendor invoice ^[7].

The author, whose book "Disposable Workers: The Transformation of Employment" is the basis for the essay, defines a disposable job as one where the person works at an employer's site but the employer makes no commitment on career prospects or job security ^[1][2]. The estimate rests on a commissioned nationally representative survey of more than 6,000 people conducted in late 2022, plus interviews with nearly 100 workers, employers and policymakers ^[4].

The breakdown is where the operating implications sit. Contractors employed by a staffing firm and placed at a client site - temp office staff, cleaners, security guards, and at the high-paid end travel nurses - are 13% of the workforce ^[5]. Freelancers working for organizations without being employees, including rideshare and delivery drivers, programmers and freelance journalists, are 5% ^[6]. "Marginal workers," who are actual employees of the company but have no career path and whose jobs have high turnover designed in, are 17% ^[7]. The three add to 35%, which against a 162 million workforce is about 56.7 million people ^[8]. Marginal work is roughly half the total on its own ^[9].

That is the part most workforce models get wrong. Contingent spend that runs through a staffing agency is visible; it has a rate card and a procurement owner. Marginal roles look standard on the org chart. The author's examples are staff attorneys hired off the partner track to do case-specific grunt work with no commitment if business lags, and adjunct and contract faculty who teach without job security or a route to tenure ^[10]. On the academic side the shift is documented: 73% of those teaching at U.S. colleges and universities held tenure or tenure-track posts in 1970, against 32% in 2021 ^[11]. The non-tenure-track share therefore went from 27% to 68%, roughly two and a half times, in five decades ^[12].

The cost arithmetic behind part-time marginal work is blunt. Part-time hourly pay runs nearly 20% below full-time pay after adjusting for age, education, occupation and industry, and counting benefits widens the gap by another 5 points ^[13]. Higher turnover is treated as a second benefit, not a cost: it lets employers resize the workforce without layoffs and avoids spending on career development ^[14]. A team led by professor Susan Lambert interviewed 88 low-wage employers and found many using part-time work for flexibility, with one manager saying of temps: "We don't need them. Wait a day for turnover" ^[15].

Read the number with its definition attached. The 57 million is one researcher's classification, built on self-reported survey data now more than three years old, and the 17% marginal category is the judgment call doing most of the work ^[3][4][7]. Someone using a narrower definition of contingent work would report a much smaller total.

What to watch: whether your own headcount reporting can separate career-track from marginal roles at all, because if it cannot, the churn cost is being booked as recruiting overhead rather than as the price of the flexibility it buys ^[14]. Also worth noting for anyone who thinks this is confined to low-wage service work: per the same author, the tasters PepsiCo hires to test its chips are contractors ^[16].