MAC NABB ENGINEERING CO., INC.
131 LEXINGTON STREET, WALTHAM, MA 02154
Having inspection records is common for businesses in regulated industries. Data and methodology
Inspection records
Dec 17, 1992#108932898Dec 17, 1992Complaint (B) · Partial scope, Safety#108932898$1,3504 viol.4 violations$1,350 in penalties
Inspection #108932898
Dates
- Opened
- Dec 17, 1992
- Closing Conference Date
- Dec 17, 1992
- Closed
- Mar 30, 1993
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 33
- Related Activity
- 1 complaint
Violations and Penalties
- Total Violations
- 4
- Violation Types
- 2 repeat, 2 other-than-serious
- Initial Penalties
- $1,350
- Penalties on Record
- $1,350
- Site Address
- 131 Lexington Street, Waltham, MA 02154
- Industry
- Not classified in OSHA's inspection record.
Complaint Inspection: This inspection record is categorized as a complaint inspection in the DOL OSHA enforcement data. OSHA can open complaint-driven inspections after receiving safety or health complaints from workers or their representatives.
Violations
Violation list (4 of 4 shown)
| Citation | Standard | Type | Instances | Exposed | Initial | Current | Abatement | Contest | Final Order |
|---|---|---|---|---|---|---|---|---|---|
| 01001A | 1910.1200 Hazard Communication OSHA citation code: 19101200 E01 | Repeat | 2 | 2 | $1,350 | $1,350 | Feb 16, 1993 | - | - |
| 01001B | 1910.1200 Hazard Communication OSHA citation code: 19101200 H | Repeat | 2 | 2 | $0 | $0 | Feb 16, 1993 | - | - |
| 02001 | 1910.304 Electrical - Wiring Design and Protection OSHA citation code: 19100304 E01 IV | Other | 1 | 2 | $0 | $0 | Feb 16, 1993 | - | - |
| 02002 | 1910.305 Electrical - Wiring Methods, Components, and Equipment OSHA citation code: 19100305 B01 | Other | 1 | 2 | $0 | $0 | Feb 16, 1993 | - | - |
Jan 16, 1992#108927047Jan 16, 1992Planned (H) · Complete scope, Safety#108927047$5,02520 viol.20 violations$5,025 in penalties
Inspection #108927047
Dates
- Opened
- Jan 16, 1992
- Closing Conference Date
- Jan 27, 1992
- Closed
- Aug 21, 1992
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 18
Violations and Penalties
- Total Violations
- 20
- Violation Types
- 18 serious, 2 other-than-serious
- Initial Penalties
- $10,050
- Penalties on Record
- $5,025
- Site Address
- 131 Lexington Street, Waltham, MA 02154
- Industry
- Not classified in OSHA's inspection record.
Planned Inspection: This inspection record is categorized as a planned inspection in the DOL OSHA enforcement data. Planned inspections are part of OSHA's scheduled enforcement activity rather than being opened directly from a complaint or reported incident at that worksite.
Violations
Violation list (20 of 20 shown)
| Citation | Standard | Type | Instances | Exposed | Initial | Current | Abatement | Contest | Final Order |
|---|---|---|---|---|---|---|---|---|---|
| 01001 | 1910.37 Maintenance, Safeguards, and Operational Features for Exit Routes OSHA citation code: 19100037 F06 | Serious | 1 | 2 | $750 | $375 | Mar 19, 1992 | - | - |
| 01002 | 1910.94 Ventilation OSHA citation code: 19100094 D09 VII | Serious | 1 | 1 | $600 | $300 | Mar 19, 1992 | - | - |
| 01003 | 1910.212 General Requirements for All Machines (Machine Guarding) OSHA citation code: 19100212 A01 | Serious | 1 | 1 | $600 | $300 | Mar 19, 1992 | - | - |
| 01004 | 1910.212 General Requirements for All Machines (Machine Guarding) OSHA citation code: 19100212 A03 II | Serious | 8 | 1 | $1,050 | $525 | May 15, 1992 | - | - |
| 01005 | 1910.217 Mechanical Power Presses OSHA citation code: 19100217 B03 I | Serious | 3 | 1 | $600 | $300 | Mar 19, 1992 | - | - |
| 01006 | 1910.217 Mechanical Power Presses OSHA citation code: 19100217 B08 III | Serious | 2 | 1 | $600 | $300 | Mar 19, 1992 | - | - |
| 01007A | 1910.217 Mechanical Power Presses OSHA citation code: 19100217 C01 I | Serious | 1 | 1 | $600 | $300 | Mar 19, 1992 | - | - |
| 01007B | 1910.217 Mechanical Power Presses OSHA citation code: 19100217 C02 IA | Serious | 2 | 1 | $0 | $0 | Mar 19, 1992 | - | - |
| 01008 | 1910.219 Mechanical Power-Transmission Apparatus OSHA citation code: 19100219 D01 | Serious | 2 | 1 | $450 | $225 | Mar 19, 1992 | - | - |
| 01009 | 1910.303 Electrical - General Requirements OSHA citation code: 19100303 G02 II | Serious | 1 | 1 | $600 | $300 | Feb 13, 1992 | - | - |
| 01010 | 1910.304 Electrical - Wiring Design and Protection OSHA citation code: 19100304 F04 | Serious | 2 | 1 | $600 | $300 | Feb 12, 1992 | - | - |
| 01011 | 1910.305 Electrical - Wiring Methods, Components, and Equipment OSHA citation code: 19100305 B02 | Serious | 2 | 2 | $600 | $300 | Feb 18, 1992 | - | - |
| 01012 | 1910.305 Electrical - Wiring Methods, Components, and Equipment OSHA citation code: 19100305 G01 III | Serious | 4 | 4 | $600 | $300 | Feb 18, 1992 | - | - |
| 01013 | 1910.305 Electrical - Wiring Methods, Components, and Equipment OSHA citation code: 19100305 G02 II | Serious | 1 | 1 | $600 | $300 | Feb 13, 1992 | - | - |
| 01014 | 1910.305 Electrical - Wiring Methods, Components, and Equipment OSHA citation code: 19100305 G02 III | Serious | 2 | 1 | $600 | $300 | Feb 18, 1992 | - | - |
| 01015 | 1910.305 Electrical - Wiring Methods, Components, and Equipment OSHA citation code: 19100305 I03 | Serious | 3 | 3 | $600 | $300 | Feb 12, 1992 | - | - |
| 01016A | 1910.1200 Hazard Communication OSHA citation code: 19101200 F05 I | Serious | 1 | 1 | $600 | $300 | Apr 1, 1992 | - | - |
| 01016B | 1910.1200 Hazard Communication OSHA citation code: 19101200 F05 II | Serious | 1 | 1 | $0 | $0 | Feb 18, 1992 | - | - |
| 02001 | 1910.307 Electrical - Hazardous (Classified) Locations OSHA citation code: 19100307 B | Other | 1 | 1 | $0 | $0 | Mar 19, 1992 | - | - |
| 02002 | 1910.1200 Hazard Communication OSHA citation code: 19101200 E01 | Other | 1 | 10 | $0 | $0 | May 15, 1992 | - | - |
Penalty amounts may differ from final amounts after settlement or judicial review. How to read these records
About these records
A company page groups inspections with the same normalized employer name, city and state; it is not a legal-entity identifier (how pages are grouped).
This page displays public OSHA enforcement data. Status text follows the DOL inspection record first and may include citation-level context when the inspection feed and citation records are out of sync. Penalty amounts shown reflect the latest penalty amounts on record in the DOL database and may differ from initial assessments or final amounts. This is not an official OSHA resource.
OSHA's public enforcement data does not publish a "guilty" or "not guilty" field for inspections. The closest outcome fields available are the citation counts, penalty amounts, contest dates, final-order dates, and the inspection close date shown on this page. How to interpret these status fields. How initial and current penalties are recorded.
OSHA may publish multiple citation rows in the same inspection with the same standard and penalty fields. Separate rows can still differ in OSHA metadata such as citation identifier, recorded instance count, exposed workers, or gravity value. Contest and Final Order columns show citation-level dates from OSHA's enforcement record. A dash means OSHA's record does not currently show that activity for the citation.
Understanding These Penalties
The maximum penalty for a serious violation in 2025 is $16,550 per violation. For willful violations, the range is $11,823 to $165,514. The current penalty column shows the latest amount on record in OSHA's database for each citation. When the current penalty differs from the initial penalty, OSHA's records show that the amount changed during the enforcement process, but this page does not determine the specific reason for each change. Penalty amounts are set by OSHA and adjusted annually for inflation.
2 inspections, 1992 to 1992. Each row is one inspection; point at or tap a row for its dates and totals.
Source: DOL OSHA enforcement data (inspections and violations), linked via activity_nr (exact government key).
Penalty changes: Amounts shown reflect what OSHA's enforcement record publishes. The reason for any change is not stated unless OSHA's record explicitly says so.