Of 9,879 eligible patients, 1,105 (11%) received a work note. Compared to those who did not, patients receiving notes were more likely to be Black (35% vs. 25%), Hispanic (42% vs. 33%), of prime working age (23–39 years), and to have lower educational attainment (p<0.001 for all). They were more likely to present with lower acuity (ESI 4–5: 45% vs. 32%, p<0.001). Logistic regression showed that each one-point increase in ADI was associated with 1.09 higher odds of receiving a work note (95% CI 1.05–1.13, p<0.001), and lower acuity was associated with 1.76 higher odds compared to higher acuity visits (95% CI 1.55–2.00, p<0.001). Urgent care drive time was not significantly associated with work note receipt. Geographic heterogeneity was modest.