2,042,423Injury reports 130,778Establishments Most recent incident 2025-12-31
Safety Incidents OSHA Severe Injury Reports · 2015–2025

CHICAGO, IL —

OSHA Injury Report: 4111 SIGNAL MAINTENANCE

Injury · Other recordable case

At a glance

On , an injury at 4111 SIGNAL MAINTENANCE in W S POWER WAY 3900 W MAYPOLE, CHICAGO, IL 60624 resulted in other recordable case. Employee was sIGNAL MAINTAIN in mixed Mode Transit System.

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Where did this happen?

Establishment
4111 SIGNAL MAINTENANCE
Parent company
Chicago Transit Authority SIGNAL MAINTENANCE
Street
W S POWER WAY 3900 W MAYPOLE
City
CHICAGO
State
IL
ZIP
60624
On-site location
TOWER 17

What was the outcome?

Outcome
Other recordable case (code 4)
Type
Injury (code 1)

Before the incident

WALKING DOWN STAIRS

What happened

EE was walking down stairs and slipped down the stairs causing injuries to his chest and ribs

Injury or illness

Strained Chest Fall on stairs STAIRS

Object or substance involved

STAIRS

Summary line

EE was walking down stairs and slipped down the stairs causing injuries to his chest and ribs

Employee and industry

Job description
SIGNAL MAINTAIN
SOC code
49-9097 — Signal and Track Switch Repairers
NAICS code
485111 — Mixed Mode Transit System
NAICS vintage
2022
Avg employees
118
Total hours worked
254007
EIN
362164842
Establishment ID
1173509
Employer case #
1818

When (timing detail)

Date of incident
Shift started
6:00
Time of incident
6:15
Filing year
2025
Submitted
23FEB26:18:09:00

More injuries at 4111 SIGNAL MAINTENANCE

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Source

Data from OSHA ITA Form 300/301 electronic submissions, filing year 2025. ITA Case Detail records are establishment-reported submissions, not OSHA inspections — no per-record IMIS deep link exists.