Hawaii Revised Statutes Division 2. Business § 444-7

(a) For the purpose of classification, the contracting business includes any or all of the following branches:

(b) A general engineering contractor is a contractor whose principal contracting business is in connection with fixed works requiring specialized engineering knowledge and skill, including the following divisions or subjects: irrigation, drainage, water power, water supply, flood control, inland waterways, harbors, docks and wharves, shipyards and ports, dams and hydroelectric projects, levees, river control and reclamation works, railroads, highways, streets and roads, tunnels, airports and airways, sewers and sewage disposal plants and systems, waste reduction plants, bridges, overpasses, underpasses and other similar works, pipelines and other systems for the transmission of petroleum and other liquid or gaseous substances, parks, playgrounds and other recreational works, refineries, chemical plants and similar industrial plants requiring specialized engineering knowledge and skill, powerhouses, power plants and other utility plants and installations, mines and metallurgical plants, land levelling and earth-moving projects, excavating, grading, trenching, paving and surfacing work and cement and concrete works in connection with the above mentioned fixed works.

(c) A general building contractor is a contractor whose principal contracting business is in connection with any structure built, being built, or to be built, for the support, shelter, and enclosure of persons, animals, chattels, or movable property of any kind, requiring in its construction the use of more than two unrelated building trades or crafts, or to do or superintend the whole or any part thereof.

(d) A specialty contractor is a contractor whose operations as such are the performance of construction work requiring special skill such as, but not limited to, electrical, drywall, painting and decorating, landscaping, flooring, carpet laying by any installation method, plumbing, or roofing work, and others whose principal contracting business involves the use of specialized building trades or crafts.