Y K MASON CONSTRUCTION, INC
200 GUERRERO ST., SAN FRANCISCO, CA 94110 · NAICS 238990 All Other Specialty Trade Contractors
Having inspection records is common for businesses in regulated industries. Data and methodology
Inspection records
Jul 25, 2017#342495074Jul 25, 2017Complaint (B) · No Inspection scope, Safety#342495074$00 viol.0 violations$0 in penalties
Inspection #342495074
Dates
- Opened
- Jul 25, 2017
- Closing Conference Date
- Not recorded
- Closed
- Jul 25, 2017
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 1
- Related Activity
- 1 complaint
Violations and Penalties
- Total Violations
- 0
- Initial Penalties
- $0
- Penalties on Record
- $0
- Site Address
- 230 Avila Street, San Francisco, CA 94123
- Industry
- 238990 All Other Specialty Trade Contractors
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.
Oct 5, 2016#341823706Oct 5, 2016Unprogrammed Related (G) · Partial scope, Safety#341823706$00 viol.0 violations$0 in penalties
Inspection #341823706
Dates
- Opened
- Oct 5, 2016
- Closing Conference Date
- Feb 3, 2017
- Closed
- Feb 7, 2017
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 8
Violations and Penalties
- Total Violations
- 0
- Initial Penalties
- $0
- Penalties on Record
- $0
- Site Address
- 200 Guerrero St., San Francisco, CA 94110
- Industry
- 238990 All Other Specialty Trade Contractors
Unprogrammed Related Inspection: This inspection record is categorized as an unprogrammed related inspection in the DOL OSHA enforcement data. The public DOL category label is preserved here without adding extra interpretation beyond the government label.
Jul 9, 2015#340763572Jul 9, 2015Unprogrammed Related (G) · Partial scope, Safety#340763572$1,5751 viol.1 violation$1,575 in penalties
Inspection #340763572
Dates
- Opened
- Jul 9, 2015
- Closing Conference Date
- Jul 9, 2015
- Final Order
- Sep 18, 2015
- Closed
- Sep 11, 2015
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 4
Violations and Penalties
- Total Violations
- 1
- Violation Types
- 1 serious
- Initial Penalties
- $1,575
- Penalties on Record
- $1,575
- Site Address
- 972 Filbert Street, San Francisco, CA 94133
- Industry
- 238990 All Other Specialty Trade Contractors
Unprogrammed Related Inspection: This inspection record is categorized as an unprogrammed related inspection in the DOL OSHA enforcement data. The public DOL category label is preserved here without adding extra interpretation beyond the government label.
Violations
Violation list (1 of 1 shown)
| Citation | Standard | Type | Instances | Exposed | Initial | Current | Abatement | Contest | Final Order |
|---|---|---|---|---|---|---|---|---|---|
| 01001 | 2946(B)(2) Provisions for Preventing Accidents Due to Proximity to Overhead Lines | Serious | 2 | 4 | $1,575 | $1,575 | - | Sep 18, 2015 |
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.
3 inspections, 2015 to 2017. 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.
Short cases: When a case closed soon after it opened, the closed marker is drawn slightly to the right so both markers stay visible. Each row's card shows the exact dates.
Standards cited
Industry comparison
Specialty Trade Contractors, 551,694 employers with OSHA inspections. Arithmetic from DOL records.
BLS 2024 survey: all other specialty trade contractors reported 1.6 injuries and illnesses per 100 full-time workers (total recordable cases, national, private industry; relative standard error 12.5%; NAICS 23899 level). This is an industry-wide average from a federal survey, not a measurement of this establishment. Source