Coverage description
A National Council on Compensation Insurance (NCCI) standard form. It shows rate changes, approved by the regulator for work subject to the Longshore and Harbor Workers' Compensation Act, that apply to the policy, with the state, the date of change and the percentage change for each.
Updated
What the form says
Key clauses from the original edition, which has not been revised, quoted as filed.
“Rate changes that apply to the policy have been approved by the proper regulatory authority for work subject to the Longshore and Harbor Workers’ Compensation Act.”
WC 00 04 08
Why the endorsement is attached. It is issued when approved rate changes for work under the Act take effect for a policy already written, so the policy shows the rates that now apply to that work.
“State Date of Change % Change”
WC 00 04 08
What the schedule records. Each change is entered by state, with the date it takes effect and the percentage by which the rate changes, so one endorsement can carry changes for several states.
How the form has changed
Filed copies carry the 4-84 edition, and there is no lettered NCCI revision of this endorsement to compare.
Editions
Edition dates as filed, newest first. Filing counts include every state submission that lists the edition.
| Edition | Filings | Companies | States | Filed | Document |
|---|---|---|---|---|---|
| OriginalLatest | 131 | 69 | 35 | Mar 2022 to Sep 2026 | View PDF |
What the filings show
- Edition in use: in the past 12 months, 47 companies filed the original edition.
- WC 00 04 06 (Premium Discount Endorsement) is filed alongside it most often, in 127 of the same filings (97%).
Filed under
Data from admitted P&C filings with state insurance departments, submitted Nov 2021 to Sep 2026, excluding withdrawn and rejected filings. One filing can cover several affiliated companies.
Carriers filing this form
The 10 carrier groups with the most filings that include WC 00 04 08, out of 24 in total.
| Carrier | Filings | States | Editions, most filed first | Last filed |
|---|---|---|---|---|
| WR Berkley Corporation Group6 group companies filed it, led by Intrepid Casualty Company and Intrepid Insurance Company | 33 | 30 | Original | Jun 17, 2026 |
| Brookfield Wealth Solutions Group4 group companies filed it, led by Argonaut Insurance Company and Argonaut-Midwest Insurance Company | 19 | 1 | Original | Jun 4, 2026 |
| Nationwide Corporation Group3 group companies filed it, led by Crestbrook Insurance Company and National Casualty Company | 10 | 1 | Original | Jun 30, 2026 |
| AXA Insurance Group5 group companies filed it, led by Greenwich Insurance Company and XL Insurance America, Inc. | 6 | 2 | Original | Jun 23, 2026 |
| Tokio Marine Holdings Incorporated Group2 group companies filed it, led by Safety First Insurance Company and Safety National Casualty Corporation | 6 | 2 | Original | May 14, 2025 |
| RLI Insurance GroupRLI Insurance Company | 5 | 1 | Original | Aug 18, 2026 |
| Sompo Group2 group companies filed it, led by Sompo America Fire and Marine Insurance Company and Sompo America Insurance Company | 5 | 1 | Original | Jun 15, 2026 |
| State Farm GroupState Farm Fire and Casualty Company | 5 | 1 | Original | May 4, 2026 |
| THE Hanover Insurance Group6 group companies filed it, led by Allmerica Financial Alliance Insurance Company and Allmerica Financial Benefit Insurance Company | 5 | 1 | Original | Jun 23, 2026 |
| Arch Insurance Group2 group companies filed it, led by Arch Indemnity Insurance Company and Arch Insurance Company | 4 | 1 | Original | Apr 8, 2026 |
States
Number of filings that include WC 00 04 08 in each state, Nov 2021 to Sep 2026. Darker states have more filings.
Often filed with
Standard-style form numbers that appear in the same filings most often.
- WC 00 04 06Premium Discount Endorsement127 filings
- WC 00 04 19Premium Due Date Endorsement120 filings
- WC 00 03 08Partners, Officers and Others Exclusion Endorsement97 filings
- WC 00 03 10Sole Proprietors, Partners, Officers and Others Coverage Endorsement97 filings
- WC 00 04 03Experience Rating Modification Factor Endorsement97 filings
- WC 00 04 12Contingent Experience Rating Endorsement97 filings
- WC 00 03 11Voluntary Compensation and Employers Liability Coverage Endorsement96 filings
- WC 00 03 02Designated Workplaces Exclusion Endorsement95 filings
- WC 00 03 05Joint Venture as Insured Endorsement95 filings
- WC 00 04 07Rate Change Endorsement95 filings
Recent filings
Latest filings that include this form number. Filed copies open in FilingFocus.
| Submitted | Company | State | Editions | Tracking number |
|---|---|---|---|---|
| Sep 16, 2026 | ZNAT Insurance Company | CT | Original | ZICO-135090521 |
| Aug 18, 2026 | RLI Insurance Company | CO | Original | RLSC-135057018 |
| Jun 30, 2026 | American Casualty Company of Reading, Pennsylvaniaand 5 more | CO | Original | CNAB-135003197 |
| Jun 30, 2026 | Crestbrook Insurance Companyand 1 more | CO | Original | NWPP-135003409 |
| Jun 30, 2026 | National Casualty Company | CO | Original | NWPP-135004216 |
| Jun 23, 2026 | Allmerica Financial Alliance Insurance Companyand 5 more | CO | Original | HNVX-134968029 |
| Jun 23, 2026 | AXA XL Insurance Company Americasand 3 more | CO | Original | XLAM-134996276 |
| Jun 17, 2026 | Berkley National Insurance Companyand 5 more | CO | Original | BNIC-134990058 |
| Jun 15, 2026 | Sompo America Fire and Marine Insurance Companyand 1 more | CO | Original | SMPJ-134970923 |
| Jun 12, 2026 | All America Insurance Companyand 1 more | CO | Original | CEMC-134982050 |
| Jun 4, 2026 | Argonaut-Midwest Insurance Company | CO | Original | ARGN-134974739 |
| Jun 4, 2026 | Argonaut Insurance Company | CO | Original | ARGN-134974742 |
Most filed NCCI WC forms
- WC 00 00 01 Information Page
- WC 00 04 19 Part Five, Premium Amendatory Endorsement
- WC 00 00 00 Workers Compensation and Employers Liability Insurance Policy
- WC 00 04 21 Catastrophe (Other Than Certified Acts of Terrorism) Premium Endorsement
- WC 00 04 06 Premium Discount Endorsement
- WC 00 03 13 Waiver of Our Right to Recover From Others Endorsement
- WC 00 04 22 Terrorism Risk Insurance Program Reauthorization Act Disclosure Endorsement
- WC 00 03 08 Partners, Officers and Others Exclusion Endorsement
- WC 00 03 03 Employers Liability Coverage Endorsement
- WC 00 03 11 Voluntary Compensation and Employers Liability Coverage Endorsement
- WC 00 04 03 Experience Rating Modification Factor Endorsement
- WC 00 04 04 Pending Rate Change Endorsement