Safety Incidents OSHA Severe Injury Reports · 2015–2025
5,189,992Inspections Most recent open 2026-07-18 Last loaded 2026-07-22

OSHA Inspection: ZIEN MECHANICAL CONTRACTORS, INC.

Special Programs inspection · Safety discipline

On , OSHA opened a special Programs safety inspection of ZIEN MECHANICAL CONTRACTORS, INC. in 4703 SOUTH 43RD STREET, MILWAUKEE, WI 53207 (NAICS 238220). OSHA activity number 344976725.

What this inspection record means

OSHA opens inspections for many reasons — routine scheduling under a national or local emphasis program, an employee complaint or referral, or a follow-up after a reported injury. Opening or conducting an inspection is not itself an allegation or a finding that this employer broke any rule; any findings appear as the citations listed below, and citations can be contested, reduced, or withdrawn.

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Site address
4703 SOUTH 43RD STREET
City
MILWAUKEE
State
WI
ZIP
53207
Mailing
2303 WEST MILL ROAD, GLENDALE, WI 53209
Inspection type
Special Programs (K)
Scope
Partial (B)
Discipline
Safety
Advance notice
No
Union status
B
Opened
Closing conference
Case closed
Last modified
Data loaded
NAICS code
238220
Employees
2
Ownership type
A

1 citation on file for this inspection.

1926.501 B01

Serious Gravity 1 1 instance 1 exposed
Issued
Dec 4, 2020
Penalty
Initial $3,441 · Current $2,409 Reduced
29 CFR 1926.501(b)(1): Each employee on a walking/working surface with an unprotected side or edge which was 6 feet (1.8 m) or more above a lower level was not protected from falling by the use of guardrail systems, safety net systems, or personal fall arrest systems.  (a) On October 16, 2020, an employee installing a new wall HVAC unit, was not protected from falling to the lower level by the use of an approved fall protection system. This exposed the employee to a fall hazard greater than 6 feet.
Recent events (2)
  • — I (S) $2408.7
  • — Z (S) $3441

View Zien Mechanical Contractors, INC.'s full OSHA safety record →

This record is reproduced from the U.S. Department of Labor Open Data API (OSHA inspection dataset). The original IMIS detail view is available at OSHA's Establishment Search for activity number 344976725.

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