ONKB CORPORATION
4551 S. PRAIRIE AVENUE, CHICAGO, IL 60653 · NAICS 238140 Masonry Contractors
Having inspection records is common for businesses in regulated industries. Data and methodology
Inspection records
Mar 26, 2026#348836396Mar 26, 2026Referral (C) · Partial scope, Safety#348836396$00 viol.0 violations$0 in penalties
Inspection #348836396
Dates
- Opened
- Mar 26, 2026
- Closing Conference Date
- Mar 26, 2026
- Closed
- Jun 29, 2026
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 4
- Related Activity
- 1 referral
Violations and Penalties
- Total Violations
- 0
- Initial Penalties
- $0
- Penalties on Record
- $0
- Site Address
- 2239-2-D W Oakdale Ave, Chicago, IL 60618
- Industry
- 238140 Masonry Contractors
Referral Inspection: This inspection record is categorized as a referral inspection in the DOL OSHA enforcement data. Referral inspections can result from another agency, another OSHA activity, or another source referring a potential hazard to OSHA.
Apr 29, 2022#345952915Apr 29, 2022Programmed Related (I) · Partial scope, Safety#345952915$3,9001 viol.1 violation$3,900 in penalties
Inspection #345952915
Dates
- Opened
- Apr 29, 2022
- Closing Conference Date
- Apr 29, 2022
- Final Order
- Sep 29, 2022
- Closed
- Sep 29, 2023
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 6
Violations and Penalties
- Total Violations
- 1
- Violation Types
- 1 repeat
- Initial Penalties
- $9,571
- Penalties on Record
- $3,900
- Site Address
- 4551 S. Prairie Avenue, Chicago, IL 60653
- Industry
- 238140 Masonry Contractors
Programmed Related Inspection: This inspection record is categorized as a programmed 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 | 1926.501 Fall Protection - Duty to Have Fall Protection OSHA citation code: 19260501 B09 I | Repeat | 1 | 6 | $9,571 | $3,900 | Sep 13, 2022 | - | Sep 29, 2022 |
Apr 6, 2018#343068821Apr 6, 2018Planned (H) · Partial scope, Safety#343068821$2,0951 viol.1 violation$2,095 in penalties
Inspection #343068821
Dates
- Opened
- Apr 6, 2018
- Closing Conference Date
- Apr 6, 2018
- Final Order
- Jul 18, 2018
- Closed
- Aug 23, 2018
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 7
Violations and Penalties
- Total Violations
- 1
- Violation Types
- 1 serious
- Initial Penalties
- $3,492
- Penalties on Record
- $2,095
- Site Address
- 2612 S. Halsted St., Chicago, IL 60608
- Industry
- 238140 Masonry Contractors
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 (1 of 1 shown)
| Citation | Standard | Type | Instances | Exposed | Initial | Current | Abatement | Contest | Final Order |
|---|---|---|---|---|---|---|---|---|---|
| 01001 | 1926.501 Fall Protection - Duty to Have Fall Protection OSHA citation code: 19260501 B01 | Serious | 1 | 2 | $3,492 | $2,095 | Jun 27, 2018 | - | Jul 18, 2018 |
Mar 16, 2010#314257320Mar 16, 2010Planned (H) · Partial scope, Safety#314257320$1,0001 viol.1 violation$1,000 in penalties
Inspection #314257320
Dates
- Opened
- Mar 16, 2010
- Closing Conference Date
- Mar 16, 2010
- Closed
- Jul 27, 2010
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 5
Violations and Penalties
- Total Violations
- 1
- Violation Types
- 1 serious
- Initial Penalties
- $2,000
- Penalties on Record
- $1,000
- Site Address
- 1267 W. Wrightwood, Chicago, IL 60614
- Industry
- 238140 Masonry Contractors
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 (1 of 1 shown)
| Citation | Standard | Type | Instances | Exposed | Initial | Current | Abatement | Contest | Final Order |
|---|---|---|---|---|---|---|---|---|---|
| 01001 | 1926.451 Scaffolding - General Requirements OSHA citation code: 19260451 G01 | Serious | 1 | 4 | $2,000 | $1,000 | Apr 5, 2010 | - | - |
Nov 20, 2009#313987760Nov 20, 2009Planned (H) · Partial scope, Safety#313987760$9006 viol.6 violations$900 in penalties
Inspection #313987760
Dates
- Opened
- Nov 20, 2009
- Closing Conference Date
- Nov 20, 2009
- Closed
- Feb 23, 2010
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 10
Violations and Penalties
- Total Violations
- 6
- Violation Types
- 6 serious
- Initial Penalties
- $2,250
- Penalties on Record
- $900
- Site Address
- 1307 W. Wrightwood, Chicago, IL 60634
- Industry
- 238140 Masonry Contractors
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 (6 of 6 shown)
| Citation | Standard | Type | Instances | Exposed | Initial | Current | Abatement | Contest | Final Order |
|---|---|---|---|---|---|---|---|---|---|
| 01001A | 1926.20 General Safety and Health Provisions OSHA citation code: 19260020 B01 | Serious | 1 | 2 | $750 | $300 | Jan 27, 2010 | - | - |
| 01001B | 1926.20 General Safety and Health Provisions OSHA citation code: 19260020 B02 | Serious | 1 | 2 | $0 | $0 | Jan 27, 2010 | - | - |
| 01001C | 1926.503 Fall Protection - Training Requirements OSHA citation code: 19260503 A01 | Serious | 1 | 10 | $0 | $0 | Jan 27, 2010 | - | - |
| 01002A | 1926.501 Fall Protection - Duty to Have Fall Protection OSHA citation code: 19260501 B01 | Serious | 1 | 10 | $1,500 | $600 | Jan 4, 2010 | - | - |
| 01002B | 1926.501 Fall Protection - Duty to Have Fall Protection OSHA citation code: 19260501 B04 I | Serious | 2 | 10 | $0 | $0 | Jan 4, 2010 | - | - |
| 01002C | 1926.501 Fall Protection - Duty to Have Fall Protection OSHA citation code: 19260501 B09 | Serious | 1 | 10 | $0 | $0 | Jan 4, 2010 | - | - |
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.
5 inspections, 2009 to 2026. 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.
Standards cited
Industry comparison
Specialty Trade Contractors, 559,382 employers with OSHA inspections. Arithmetic from DOL records.
BLS 2024 survey: masonry contractors reported 1.9 injuries and illnesses per 100 full-time workers (total recordable cases, national, private industry; relative standard error 15.2%; NAICS 23814 level). This is an industry-wide average from a federal survey, not a measurement of this establishment. Source