Inspection 349245928 OPENED OCT 22, 2026Open
385 E 7th St, Saint Paul, MN 55101 · Plumbing, Heating, and Air-Conditioning Contractors · OSHA's record · Phone and website on Google Maps
No citations from this inspection so far.
OSHA has inspected Master Mechanical Inc 16 times in Minnesota since 1989.
The latest one began on Oct 22, 2026 as a planned inspection, in Saint Paul; the case is still open.
Those inspections ended with 19 citation items: 8 serious and 11 other-than-serious.
Penalties were first proposed at $53,895 and now stand at $33,080, 39% lower after settlements or reviews.
Job-site wiring comes up most often in these citations: 3 items under 1926.405.
How that compares: the median penalty per cited inspection for construction employers since 2015 is $3,080, and Master Mechanical Inc averages $30,000 (1 cited inspection).
1 inspection on this page followed a fatal incident.
Master Mechanical Inc also files yearly injury logs with OSHA, summarized below.
Want to know if OSHA cites Master Mechanical Inc again? Add it to a watchlist and we will email you the morning the citation shows up.
Watch this companyInspection history
Inspection 342523917 OPENED AUG 3, 2017Closed
3100 W River Pkwy, Minneapolis, MN 55406 · Plumbing, Heating, and Air-Conditioning Contractors · OSHA's record · Phone and website on Google Maps
Incident on Aug 2, 2017 (fatal): Two employees are killed by natural gas explosion
On August 2, 2017, two sub-contracted employees were working to relocate natural gas meters and connect new piping. The two workers were working in the sub-basement level ("meter room") disconnecting a portion of pipe adjacent to the shut-off valve when a natural gas leak occurred filling the room with gas and ultimately resulting in a large explosion. Consequently, two school employees were fatally injured with a total of nine employee hospitalizations.
| Citation and rule | Type | Proposed | Current | Issued | Status |
|---|---|---|---|---|---|
| Citation 1, item 1 29 CFR 1926.21(b)(2) · Construction safety training |
Other-than-serious | $25,000 | $5,000 | Jan 12, 2018 | Final |
| Citation 1, item 2 | Serious | $25,000 | $25,000 | Jan 12, 2018 | Final |
Inspection 317587798 OPENED FEB 24, 2014Closed
6701 Evenstad Dr N, Maple Grove, MN 55369 · Plumbing, Heating, and Air-Conditioning Contractors · OSHA's record · Phone and website on Google Maps
| Citation and rule | Type | Proposed | Current | Issued | Status |
|---|---|---|---|---|---|
| Citation 1, item 1 | Other-than-serious | $450 | $315 | Mar 4, 2014 | Final |
| Citation 2, item 1 29 CFR 1910.1200(h)(3)(iv) · Hazard communication |
Other-than-serious | $150 | $100 | Mar 4, 2014 | Final |
Inspection 314845033 OPENED AUG 31, 2010Closed
9700 France Ave S, Bloomington, MN 55431 · Plumbing, Heating, and Air-Conditioning Contractors · OSHA's record · Phone and website on Google Maps
| Citation and rule | Type | Proposed | Current | Issued | Status |
|---|---|---|---|---|---|
| Citation 1, item 1 29 CFR 1926.501(b)(3) · Fall protection in construction |
Serious | $1,100 | $770 | Sep 21, 2010 | Closed |
Inspection 309213544 OPENED JUN 23, 2005Closed
6754 Valley View Road, Edina, MN 55439 · Commercial and Institutional Building Construction · OSHA's record · Phone and website on Google Maps
| Citation and rule | Type | Proposed | Current | Issued | Status |
|---|---|---|---|---|---|
| Citation 1, item 1 29 CFR 1926.1101(k)(4) · Asbestos in construction |
Serious | $800 | $560 | Aug 19, 2005 | Closed |
Inspection 305287369 OPENED APR 30, 2002Closed
8595 Central Park Place, Woodbury, MN 55125 · OSHA's record · Phone and website on Google Maps
| Citation and rule | Type | Proposed | Current | Issued | Status |
|---|---|---|---|---|---|
| Citation 1, item 1 29 CFR 1926.405(a)(2)(iii) · Job-site wiring |
Other-than-serious | $200 | $140 | May 23, 2002 | Closed |
Inspection 301854154 OPENED OCT 30, 1997Closed
2825 Lone Oak Pkwy, Eagan, MN 55121 · OSHA's record · Phone and website on Google Maps
No citations from this inspection.
Inspection 300359064 OPENED JUN 17, 1996Closed
Mpls/st Paul Int'l Airport, Gold Concourse, St Paul, MN 55155 · OSHA's record · Phone and website on Google Maps
No citations from this inspection.
8 older inspections
Inspection 120401682 OPENED FEB 28, 1995Closed
800 Denmark Ave, Farmington, MN 55024 · OSHA's record · Phone and website on Google Maps
| Citation and rule | Type | Proposed | Current | Issued | Status |
|---|---|---|---|---|---|
| Citation 1, item 1 29 CFR 1926.1053(b)(16) · Ladders in construction |
Serious | $300 | $300 | Mar 8, 1995 | Closed |
Inspection 120381520 OPENED MAY 31, 1994Closed
12154 Ensign Ave, Champlin, MN 55316 · OSHA's record · Phone and website on Google Maps
No citations from this inspection.
Inspection 120388665 OPENED JUL 19, 1993Closed
319 Kellogg Blvd, St Paul, MN 55108 · OSHA's record · Phone and website on Google Maps
| Citation and rule | Type | Proposed | Current | Issued | Status |
|---|---|---|---|---|---|
| Citation 1, item 1 29 CFR 1926.405(g)(2)(iv) · Job-site wiring |
Other-than-serious | $0 | $0 | Aug 26, 1993 | Closed |
| Citation 1, item 2 | Other-than-serious | $0 | $0 | Aug 26, 1993 | Closed |
Inspection 120415203 OPENED JUN 30, 1993Closed
2027 W Broadway, Minneapolis, MN 55411 · OSHA's record · Phone and website on Google Maps
| Citation and rule | Type | Proposed | Current | Issued | Status |
|---|---|---|---|---|---|
| Citation 1, item 1 29 CFR 1926.1053(b)(13) · Ladders in construction |
Serious | $187 | $187 | Aug 6, 1993 | Closed |
Inspection 120420120 OPENED MAR 22, 1993Closed
3015 Raleigh Ave., St. Louis Park, MN 55426 · OSHA's record · Phone and website on Google Maps
| Citation and rule | Type | Proposed | Current | Issued | Status |
|---|---|---|---|---|---|
| Citation 1, item 1 | Other-than-serious | $0 | $0 | May 7, 1993 | Closed |
Inspection 120437561 OPENED SEP 2, 1992Closed
7001 York Ave S, Edina, MN 55435 · OSHA's record · Phone and website on Google Maps
| Citation and rule | Type | Proposed | Current | Issued | Status |
|---|---|---|---|---|---|
| Citation 1, item 1 29 CFR 1926.404(b)(1)(ii) · Ground-fault protection on job sites |
Serious | $221 | $221 | Sep 24, 1992 | Closed |
| Citation 1, item 2 29 CFR 1926.404(f)(6) · Ground-fault protection on job sites |
Serious | $187 | $187 | Sep 24, 1992 | Closed |
| Citation 2, item 1 29 CFR 1926.405(a)(2)(iij) · Job-site wiring |
Other-than-serious | $0 | $0 | Sep 24, 1992 | Closed |
Inspection 120428990 OPENED JUN 25, 1992Closed
3750 Plant Rd., Eagan, MN 55123 · OSHA's record · Phone and website on Google Maps
| Citation and rule | Type | Proposed | Current | Issued | Status |
|---|---|---|---|---|---|
| Citation 1, item 1 29 CFR 1926.416(e)(1) · Electrical safety in construction |
Other-than-serious | $0 | $0 | Jul 16, 1992 | Closed |
| Citation 1, item 2 29 CFR 1926.404(b)(1) · Ground-fault protection on job sites |
Other-than-serious | $0 | $0 | Jul 16, 1992 | Closed |
Inspection 107774952 OPENED OCT 5, 1989Closed
1725 Beam Ave., Brichrun Station Shopping Center, Maplewood, MN 55109 · OSHA's record · Phone and website on Google Maps
| Citation and rule | Type | Proposed | Current | Issued | Status |
|---|---|---|---|---|---|
| Citation 1, item 1 | Serious | $300 | $300 | Nov 9, 1989 | Closed |
| Citation 2, item 1 29 CFR 1926.500(b)(1) · Scope, application, and definitions applicable to this subpart |
Other-than-serious | $0 | $0 | Nov 9, 1989 | Closed |
Injury and illness logs
From the Form 300A summaries employers file with OSHA each year. Rate = recordable cases per 100 full-time workers.
In 2025, the Eagan site logged 6 recordable injuries or illnesses among about 109 workers: 6.2 per 100 full-time workers, against a median of 1.8 for its industry. Those cases cost 89 days away from work.
| Site and year | Workers | Cases | Days-away cases | Rate | Industry median |
|---|---|---|---|---|---|
| Master Mechanical, Inc. Eagan · 2025 | 109 | 6 | 2 | 6.2 | 1.8 |
| Master Mechanical, Inc Eagan · 2023 | 84 | 3 | 1 | 3.1 | 1.8 |
The rules behind these citations
Current text from the Code of Federal Regulations. Some citations were issued under older wording.
29 CFR 1910.1200 · Hazard communication
29 CFR 1910.1200(h)(3)(iv)
(iv) The details of the hazard communication program developed by the employer, including an explanation of the labels received on shipped containers and the workplace labeling system used by their employer; the safety data sheet, including the order of information and how employees can obtain and use the appropriate hazard information.
29 CFR 1926.1053 · Ladders in construction
29 CFR 1926.1053(b)(13)
(13) The top or top step of a stepladder shall not be used as a step.
29 CFR 1926.1053(b)(16)
(16) Portable ladders with structural defects, such as, but not limited to, broken or missing rungs, cleats, or steps, broken or split rails, corroded components, or other faulty or defective components, shall either be immediately marked in a manner that readily identifies them as defective, or be tagged with “Do Not Use” or similar language, and shall be withdrawn from service until repaired.
29 CFR 1926.1101 · Asbestos in construction
29 CFR 1926.21 · Construction safety training
29 CFR 1926.404 · Ground-fault protection on job sites
29 CFR 1926.405 · Job-site wiring
29 CFR 1926.416 · Electrical safety in construction
29 CFR 1926.500 · Scope, application, and definitions applicable to this subpart
29 CFR 1926.501 · Fall protection in construction
Other plumbing, heating, and air-conditioning contractors employers in Minnesota
- Cedar Creek Energy Corporation Faribault · 1 citation · $2,940
- Centurion Industries Inc dba A-Lert Brewster · 2 citations · $4,200
- Mikes Custom Mechanical Inc Minneapolis · 9 citations · $8,075
- Encompass Inc Plymouth · 4 citations · $1,500
- Kramer Mechanical Plumbing and Heating Inc Elk River · 2 citations · $340
- 3D Mechanical Inc Minneapolis · 4 citations · $912
Source: U.S. Department of Labor, OSHA enforcement data. A citation is OSHA's allegation; employers can contest it, and the status column shows where each item stands. Something wrong on this page? Tell us.