Safety Incidents OSHA Severe Injury Reports · 2015–2025
5,197,124Inspections Most recent open 2026-08-25 Last loaded 2026-08-28

OSHA Inspection: S.W. MERTZ MASONRY

Planned inspection · Safety discipline

On , OSHA opened a planned safety inspection of S.W. MERTZ MASONRY in 228 WALNUT STREET, NAPA, CA 94558 (NAICS 238140). OSHA activity number 119635431.

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employer broke any rule; any findings appear as the citations listed below, and citations can be contested, reduced, or withdrawn.

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Establishment
S.W. MERTZ MASONRY
Site address
228 WALNUT STREET
City
NAPA
State
CA
ZIP
94558
Mailing
1150 BUSINESS PARK DRIVE, DIXON, CA 95620
Inspection type
Planned (H)
Scope
Complete (A)
Discipline
Safety
Advance notice
No
Union status
Union (Y)
Opened
Closing conference
Case closed
Data loaded
NAICS code
238140
SIC code (legacy)
1741
Employees
16
Ownership type
Private (A)
Industry flags
Construction safety.

No citations on file for this inspection, so there is no finding of any violation on this record. An inspection can be open and still ongoing, or closed with no violations at all; OSHA's citation feed is also backfilled in rolling windows, so citation rows for a very recent inspection may not have been ingested yet.

This record is reproduced from the U.S. Department of Labor Open Data API (OSHA inspection dataset). OSHA publishes its own view of this case as inspection number 119635431.

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