Wilmington School - School

May Institute, Inc.

50-E Concord Street, Suite 550, Wilmington, MA 1887
Alcoholism rehabilitation facilities (except licensed hospitals), residential (NAICS 623220)

DART 58.79 32 recordable cases · 50 avg employees · 64,632 hours worked

This establishment vs. the industry

The DART rate at this establishment is about 13.9× the industry median.

This establishment: 58.79
Industry median (Halfway houses for patients with mental health illnesses, n=493): 4.24

Reported injury and illness, 2024

Fatalities0 Days-away-from-work cases14 Restricted-duty / transferred cases5 Other recordable cases13 Total recordable cases32 Days lost to injury255

Injury rates (per 100 FTE-year, OSHA standard)

DART rate58.79 (days away + restricted/transferred) DAFW rate43.32 (days away from work only) Total recordable rate (TRIR)99.02 (all OSHA-recordable cases) Annual average employees50 Total hours worked64,632
What these numbers mean. An OSHA-recordable case is a work-related injury or illness that resulted in death, days away from work, restricted work, transfer to another job, medical treatment beyond first aid, loss of consciousness, or significant injury diagnosed by a physician. DART rate is the OSHA-standard incidence measure — calculate it as (cases with days away + restricted/transferred) × 200,000 / hours worked. The 200,000 hours normalizes to 100 full-time-equivalent workers over a year. National average DART across all industries is around 1.7; high-risk industries (skilled nursing, warehousing, courier) routinely exceed 5.

Source: OSHA ITA 300A Summary Data, calendar year 2024 filings (downloaded 2026-05-23).

OSHA Lookup · workplace-injury data from OSHA ITA 300A 2024 · About / methodology