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

OSHA Inspection: MATTSON TECHNOLOGY, INC.

Complaint inspection · Health discipline

On , OSHA opened a complaint health inspection of MATTSON TECHNOLOGY, INC. in 3550 WEST WARREN ST, FREMONT, CA 94538 (NAICS 333518). OSHA activity number 125636902.

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employer broke any rule; any findings appear as the citations listed below, and citations can be contested, reduced, or withdrawn.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
3550 WEST WARREN ST
City
FREMONT
State
CA
ZIP
94538
Mailing
C/O MIYASHIRO, 45375 NORTHPORT LOOP WEST, FREMONT, CA 94538
Inspection type
Complaint (B)
Scope
Partial (B)
Discipline
Health
Advance notice
No
Union status
N
Opened
Closing conference
Case closed
Last modified
Data loaded
NAICS code
333518
SIC code (legacy)
3549
Employees
350
Ownership type
A

15 citations on file for this inspection.

3203 A

Other-than-serious 3 instances 350 exposed
Issued
Apr 30, 2001
Abate by
Jun 15, 2001
Penalty
Initial $560 · Current $335 Reduced
Recent events (2)
  • — I (O) $335.00
  • — Z (O) $560.00

5192 P01

Other-than-serious 1 instance 6 exposed
Issued
Apr 30, 2001
Abate by
Jul 31, 2001
Penalty
Initial $560 · Current $335 Reduced
Recent events (2)
  • — I (O) $335.00
  • — Z (O) $560.00

5194 E01

Other-than-serious 2 instances 300 exposed
Issued
Apr 30, 2001
Abate by
Jun 2, 2001
Penalty
Initial $420 · Current $335 Reduced
Recent events (2)
  • — I (O) $335.00
  • — Z (O) $420.00

3314 F

Other-than-serious 1 instance 100 exposed
Issued
Apr 30, 2001
Abate by
May 17, 2001
Penalty
Initial $560 · Current $335 Reduced
Recent events (2)
  • — I (O) $335.00
  • — Z (O) $560.00

3668 F

Other-than-serious 2 instances 2 exposed
Issued
Apr 30, 2001
Abate by
Jun 2, 2001
Penalty
Initial $280 · Current $225 Reduced
Recent events (2)
  • — I (O) $225.00
  • — Z (O) $280.00

5144 H03 A

Other-than-serious 2 instances 6 exposed
Issued
Apr 30, 2001
Abate by
Jun 2, 2001
Penalty
Initial $280 · Current $225 Reduced
Recent events (2)
  • — I (O) $225.00
  • — Z (O) $280.00

23400016 B

Other-than-serious 11 instances 200 exposed
Issued
Apr 30, 2001
Abate by
May 4, 2001
Penalty
Initial $560 · Current $335 Reduced
Recent events (2)
  • — I (O) $335.00
  • — Z (O) $560.00

23400022 A

Other-than-serious 5 instances 200 exposed
Issued
Apr 30, 2001
Abate by
May 8, 2001
Penalty
Initial $420 · Current $335 Reduced
Recent events (2)
  • — I (O) $335.00
  • — Z (O) $420.00

3661 C

Other-than-serious 1 instance 6 exposed
Issued
Apr 30, 2001
Abate by
May 8, 2001
Penalty
Initial $375 · Current $150 Reduced
Recent events (2)
  • — I (O) $150.00
  • — Z (O) $375.00

3203 B

Other-than-serious 2 instances 5 exposed
Issued
Apr 30, 2001
Abate by
Jun 2, 2001
Penalty
Initial $375 · Current $300 Reduced
Recent events (2)
  • — I (O) $300.00
  • — Z (O) $375.00

5143 A05

Other-than-serious 1 instance 6 exposed
Issued
Apr 30, 2001
Abate by
Jun 2, 2001
Penalty
Initial $375 · Current $300 Reduced
Recent events (2)
  • — I (O) $300.00
  • — Z (O) $375.00

14301 B

Other-than-serious 3 instances 350 exposed
Issued
Apr 30, 2001
Abate by
Jun 2, 2001
Penalty
Initial $375 · Current $300 Reduced
Recent events (2)
  • — I (O) $300.00
  • — Z (O) $375.00

14001 C

Other-than-serious 3 instances 350 exposed
Issued
Apr 30, 2001
Abate by
Jun 2, 2001
Penalty
Initial $375 · Current $300 Reduced
Recent events (2)
  • — I (O) $300.00
  • — Z (O) $375.00

5192 Q01

Serious 1 instance 5 exposed
Issued
Apr 30, 2001
Abate by
Jul 31, 2001
Penalty
Initial $5,060 · Current $2,700 Reduced
Recent events (2)
  • — I (S) $2700.00
  • — Z (S) $5060.00

5144 H02 B

Serious 2 instances 2 exposed
Issued
Apr 30, 2001
Abate by
May 4, 2001
Penalty
Initial $5,060 · Current $2,700 Reduced
Recent events (2)
  • — I (S) $2700.00
  • — Z (S) $5060.00

View Mattson Technology, 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 125636902.

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