Workers' Compensation Insurance for Construction

Workers' compensation for construction trades including carpentry, electrical, HVAC, plumbing, roofing, masonry, and general contracting. Construction consistently carries some of the highest WC rates due to severe injury risks from falls, power tools, and heavy equipment. Rates vary widely by trade and by state.

Class Codes in Construction

5403 — Carpentry NOC

Covers general carpentry work not otherwise classified, including commercial and multi-unit building carpentry, wood structure work, remodeling, and repair when no more specific carpentry class applies. Detached one- or two-family dwelling carpentry belongs under 5645; cabinet and interior trim installation belongs under 5437.

93 / 100

class percentile · filed in 2 states

5190 — Electrical Wiring - Within Buildings

Covers electricians performing wiring, installation, and repair work within building structures.

55 / 100

class percentile · filed in 2 states

5537 — Heating, Ventilation, Air Conditioning and Refrigeration

Covers HVAC technicians installing, repairing, and maintaining heating and cooling systems.

67 / 100

class percentile · filed in 1 state

5645 — Carpentry - Detached One or Two Family Dwellings

NCCI Class Code 5645 covers carpentry work on detached one- or two-family dwellings, including framing, siding, windows, doors, decks, fencing, and residential garages built with the dwelling. General carpentry NOC (commercial, multi-story) is rated under 5403; cabinet and interior-trim installation is 5437.

92 / 100

class percentile · filed in 2 states

5022 — Masonry NOC

Covers masons performing bricklaying, stone setting, and block work on construction projects.

96 / 100

class percentile · filed in 2 states

5213 — Concrete Construction NOC

Covers employees involved in concrete construction including forming, pouring, and finishing.

87 / 100

class percentile · filed in 2 states

5437 — Carpentry - Installation of Cabinet Work or Interior Trim

Covers specialist contractors installing cabinet work, interior trim, finished woodwork, and similar finish carpentry when they do not perform other carpentry operations at the same job or location.

92 / 100

class percentile · filed in 1 state

5474 — Painting NOC & Shop Operations, Drivers

Covers painting contractors performing interior or exterior painting, decorating, surface preparation, incidental shop operations, and related drivers when no more specific painting or construction class applies.

90 / 100

class percentile · filed in 2 states

5183 — Plumbing NOC

Covers plumbers performing pipe installation, repair, and maintenance in residential and commercial settings.

64 / 100

class percentile · filed in 2 states

5221 — Concrete or Cement Work - Floors, Driveways, Yards

Covers workers performing concrete flatwork including driveways, sidewalks, patios, and floors.

86 / 100

class percentile · filed in 2 states

5551 — Roofing - All Employees

Covers all employees of roofing companies including helpers, laborers, and skilled roofers.

99 / 100

class percentile · filed in 1 state

5480 — Plastering NOC

Covers plasterers performing stucco, drywall finishing, and ornamental plaster work.

89 / 100

class percentile · filed in 2 states

6217 — Excavation NOC

Covers excavation contractors performing earthmoving, grading, trenching, and site preparation.

75 / 100

class percentile · filed in 2 states

6229 — Irrigation Works - All Operations

Covers employees installing and maintaining irrigation systems for agricultural and landscape use.

73 / 100

class percentile · filed in 2 states

5223 — Swimming Pool Construction

Covers employees constructing, remodeling, and repairing in-ground and above-ground swimming pools.

74 / 100

class percentile · filed in 2 states

5348 — Ceramic Tile, Indoor Stone, Marble, or Mosaic Work

Covers tile setters installing ceramic, porcelain, marble, and mosaic tiles in buildings.

91 / 100

class percentile · filed in 2 states

8111 — Plumber - Commercial

Covers commercial plumbing employees installing and servicing plumbing in commercial buildings.

53 / 100

class percentile · filed in 2 states

5538 — Sheet Metal Work - HVAC Ductwork

Covers sheet metal workers fabricating and installing HVAC ductwork and related components.

91 / 100

class percentile · filed in 1 state

5102 — Iron or Steel Erection - Structural

Covers ironworkers erecting structural steel for buildings, bridges, and other structures.

93 / 100

class percentile · filed in 2 states

5057 — Iron or Steel Erection - NOC

Covers miscellaneous iron and steel erection work not otherwise classified.

82 / 100

class percentile · filed in 2 states

5020 — Ceiling Installation

Covers workers engaged in the installation of ceilings, including suspended ceiling systems and drywall ceilings.

58 / 100

class percentile · filed in 1 state

5028 — Masonry - Stone

Covers masons working with natural and manufactured stone for construction of walls, facades, and other structures.

—

class percentile · filed in 0 states

5037 — Tile Roofing

Covers workers installing or repairing tile roofing systems including clay, concrete, and slate tiles.

98 / 100

class percentile · filed in 2 states

5040 — Iron/Steel Erection - Frame

Covers workers erecting structural iron or steel frames for buildings and other structures.

96 / 100

class percentile · filed in 2 states

5069 — Iron/Steel - NOC

Covers iron and steel work not otherwise classified, including miscellaneous fabrication and installation tasks.

—

class percentile · filed in 0 states

5146 — Furniture or Fixtures Installation - Portable NOC

Covers portable furniture or fixture installation in offices, stores, and similar locations, including modular partitions, workstations, showcases, counters, and small metal bins when no more specific class applies.

89 / 100

class percentile · filed in 1 state

5160 — Elevator Installation

Covers workers engaged in the installation, maintenance, and repair of elevators, escalators, and moving walkways.

55 / 100

class percentile · filed in 2 states

5188 — Automatic Sprinkler Installation

Covers workers installing automatic fire sprinkler systems in commercial and residential buildings.

62 / 100

class percentile · filed in 2 states

5193 — Electrical Wiring - Alarm

Covers electricians installing and servicing alarm and security system wiring.

91 / 100

class percentile · filed in 1 state

5201 — Concrete Block Manufacturing

Covers workers engaged in the manufacturing of concrete blocks, bricks, and precast concrete products.

—

class percentile · filed in 0 states

5215 — Concrete Work

Covers workers performing general concrete construction work including forming, pouring, and finishing.

88 / 100

class percentile · filed in 1 state

5222 — Concrete/Cement - Floors

Covers workers specializing in concrete and cement floor installation, finishing, and polishing.

88 / 100

class percentile · filed in 2 states

5436 — Carpentry - Finish Detached

Covers finish carpenters working on detached one- and two-family dwellings, including trim, molding, and door installation.

—

class percentile · filed in 0 states

5443 — Lathing

Covers workers installing metal or wood lath as a base for plaster, stucco, or other wall finishes.

76 / 100

class percentile · filed in 2 states

5462 — Glazier

Covers glaziers installing glass in windows, doors, skylights, and storefronts in commercial and residential settings.

91 / 100

class percentile · filed in 2 states

5473 — Asphalt Paving

Covers workers engaged in asphalt paving for roads, driveways, parking lots, and other surfaces.

99 / 100

class percentile · filed in 1 state

5479 — Insulation Work

Covers workers installing thermal, acoustic, and fire-resistant insulation in buildings and industrial facilities.

87 / 100

class percentile · filed in 2 states

5506 — Street/Road Construction

Covers workers engaged in the construction and reconstruction of streets, roads, and highways.

92 / 100

class percentile · filed in 1 state

5507 — Street/Road Construction - Clearing

Covers workers performing land clearing and grading operations in preparation for road and street construction.

78 / 100

class percentile · filed in 2 states

5027 — Masonry - Fireproof

Covers workers installing fireproof masonry materials including fire-rated brick, block, and mortar systems.

—

class percentile · filed in 0 states

5029 — Masonry - Decorative

Covers workers specializing in decorative masonry including stone veneer, decorative block, and ornamental brickwork.

—

class percentile · filed in 0 states

5038 — Iron Doors/Gates Installation

Covers workers fabricating and installing iron doors, gates, fences, and security barriers.

—

class percentile · filed in 0 states

5047 — Aluminum Installation

Covers workers installing aluminum siding, trim, gutters, and architectural aluminum components.

—

class percentile · filed in 0 states

5059 — Iron/Steel - Ornamental

Covers workers fabricating and installing ornamental iron and steel including railings, staircases, and decorative metalwork.

94 / 100

class percentile · filed in 2 states

5108 — Door/Window Installation

Covers workers installing doors, windows, and related hardware in residential and commercial buildings.

—

class percentile · filed in 0 states

5119 — Siding Installation

Covers workers installing exterior siding materials including vinyl, fiber cement, wood, and composite siding.

—

class percentile · filed in 0 states

5137 — Heating Equipment Installation

Covers workers installing heating equipment including furnaces, boilers, radiators, and heat pumps.

—

class percentile · filed in 0 states

5140 — Electrical Installation - Interior

Covers workers performing interior electrical installation including wiring, outlets, panels, and lighting fixtures.

—

class percentile · filed in 0 states

5148 — Cabinet Manufacturing & Install

Covers workers manufacturing and installing custom cabinetry for kitchens, bathrooms, and commercial spaces.

—

class percentile · filed in 0 states

5152 — Drilling NOC

Covers workers performing drilling operations not otherwise classified including water well drilling and geotechnical boring.

—

class percentile · filed in 0 states

5162 — Elevator Service/Maintenance

Covers workers performing elevator and escalator service, maintenance, repair, and modernization.

—

class percentile · filed in 0 states

5180 — Water Main Construction

Covers workers constructing and repairing water mains, distribution lines, and related underground utilities.

—

class percentile · filed in 0 states

5185 — Heating System Installation

Covers workers installing complete heating systems including ductwork, piping, controls, and ventilation components.

—

class percentile · filed in 0 states

5196 — Wiring - Fire Detection Systems

Covers workers installing wiring for fire detection and alarm systems in commercial and residential buildings.

—

class percentile · filed in 0 states

5214 — Concrete NOC - Poured

Covers workers performing poured concrete work not otherwise classified including foundations, walls, and structural elements.

—

class percentile · filed in 0 states

5404 — Carpentry - Install Cabinets

Covers carpenters specializing in the installation of prefabricated cabinets, countertops, and built-in storage.

—

class percentile · filed in 0 states

5432 — Carpentry - Detached One/Two Family

Covers carpenters working on detached one and two family dwellings including framing, trim, and general carpentry.

—

class percentile · filed in 0 states

9554 — Sign Installation, Maintenance, Repair, Removal or Replacement NOC - Away From Shop & Drivers

Covers away-from-shop sign installation, maintenance, repair, removal, or replacement NOC, including billboard sign work; shop operations are separately rated.

90 / 100

class percentile · filed in 1 state

Filed Figures by State

Per $100 of payroll, copied from each state's own filing. “LC” is a loss cost (before the insurer's multiplier); “rate” is a manual rate. Other states publish no per-class figure this site has transcribed.

State5403519055375645502252135437547451835221555154806217622952235348811155385102505750205028503750405069514651605188519352015215522254365443546254735479550655075027502950385047505951085119513751405148515251625180518551965214540454329554
New York$11.232 LC$2.847 LC—$4.126 LC$13.174 LC$16.455 LC—$8.058 LC$3.519 LC$9.798 LC—$8.170 LC$3.227 LC$2.254 LC$2.967 LC$5.009 LC$1.564 LC$5.496 LC$7.084 LC$5.722 LC——$12.930 LC$9.537 LC——$2.541 LC$3.387 LC$5.647 LC——$5.112 LC—$8.633 LC$4.907 LC$13.134 LC$3.429 LC$5.945 LC$2.975 LC————$5.062 LC——————————————
Wisconsin$5.325 rate$2.028 rate$3.288 rate$8.516 rate$6.360 rate$3.933 rate$6.087 rate$4.715 rate$2.212 rate$3.904 rate$12.789 rate$4.596 rate$3.601 rate$4.448 rate$3.844 rate$6.307 rate$2.922 rate—$5.885 rate$3.777 rate$2.769 rate—$8.704 rate$7.089 rate—$5.502 rate$2.149 rate$2.147 rate——$5.205 rate$4.952 rate—$2.658 rate$6.279 rate—$6.171 rate—$4.243 rate————$10.558 rate—————————————$5.800 rate

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