“…Multiple long-term studies of unionized Washington State carpenters and drywallers have found evidence of cost-shifting from WC to HI for back, upper extremity, and knee disorders (Lipscomb, Dement, Silverstein, Cameron, et al, 2009; Lipscomb et al, 2015; Schoenfisch et al, 2014). Several studies have found associations between occupational injury and subsequent increases in HI expenditures (Asfaw, Rosa, & Mao, 2013; Williams et al, 2017). Expanded HI coverage (via the Affordable Care Act [ACA] or Massachusetts health care reform) was associated with 5% to 10% decreases in hospital and emergency department WC billing volume (Armour, Goutam, & Heaton, 2016; Bronchetti & McInerney, 2017; Heaton, 2012), and conversely, a 10 percentage point decrease in HI coverage was associated with a 15% increase in Texas WC bills (Dillender, 2015), suggesting that broader access to HI may lower WC costs via cost-shifting mechanisms.…”