Class code 4583: Fertilizer Mfg. from Seaweed & Drivers
Class 4583 is the NCCI workers' comp code for “Fertilizer Mfg. from Seaweed & Drivers”.
The facts
- Official wording (NCCI)
- Fertilizer Mfg. from Seaweed & Drivers
- Industry group (our dictionary)
- Manufacturing
- Hazard group
- F
- State codes that differ
- CA 4828 · DE 0573 · PA 0573
- Line
- Workers' comp
What it means
Class 4583 is the code carriers use to rate workers' comp payroll for this kind of work.
Drivers who work for the business are rated in this same code.
NCCI hazard group F, on a scale from A (least severe claims) to G (most severe).
Some states use their own code for this work: California 4828, Delaware 0573, Pennsylvania 0573.
Who writes class 4583, state by state
From our live eligibility engine, refreshed every day (page updated November 1, 2026). It shows who has appetite, not a price. The final decision is always the carrier's underwriter.
Instant quote available 47
By email or underwriter only 0
No market listed yet 0
State fund only 4
North Dakota (North Dakota Workforce Safety & Insurance) · Ohio (Ohio Bureau of Workers' Compensation) · Washington (Washington Department of Labor & Industries) · Wyoming (Wyoming Department of Workforce Services)
Carriers with appetite for class 4583
- Travelers · 47 states · instant quote
- Employers · 45 states · instant quote
- CopperPoint · 19 states · instant quote
- Clear Spring · 47 states
- V3- National Liability & Fire Insurance Company · 47 states
- Ascendant Commercial Insurance · 46 states
- Amerisafe · 28 states
- Omaha National · 28 states
- AIG · 7 states
- Accident Fund Insurance Company Of America · 5 states
What does class code 4583 cover?
Class 4583 is the NCCI workers' comp code for “Fertilizer Mfg. from Seaweed & Drivers”. Carriers use it to rate the payroll of people doing this kind of work. It sits in NCCI hazard group F.
Who writes class code 4583 workers' comp?
In our live appetite data (updated November 1, 2026), 10 carriers have appetite for class 4583 in at least one state, and 3 of them quote it instantly. An instant quote is available in 47 states. The final decision is always the carrier's underwriter.
Does every state use class code 4583?
No. In our dictionary these states use their own code for this work: California 4828, Delaware 0573, Pennsylvania 0573. North Dakota, Ohio, Washington and Wyoming write workers' comp through the state fund.