Variant of North American Industry Classification System (NAICS) 2022 Version 1.0 for Energy sector

Non E - Industries not included in the energy sector

This category comprises all NAICS codes that do not relate to energy industries.

54 - Professional, scientific and technical services

This sector comprises establishments primarily engaged in activities in which human capital is the major input. These establishments make available the knowledge and skills of their employees, often on an assignment basis. The individual industries of this sector are defined on the basis of the particular expertise and training of the service provider.

The main components of this sector are legal services; accounting, tax preparation, bookkeeping and payroll services; architectural, engineering and related services; specialized design services; computer systems design and related services; management, scientific and technical consulting services; scientific research and development services; and advertising, public relations, and related services.

The distinguishing feature of this sector is the fact that most of the industries grouped in it have production processes that are almost wholly dependent on worker skills. In most of these industries, equipment and materials are not of major importance. Thus, the establishments classified in this sector sell expertise. Much of the expertise requires a university or college education, though not in every case.

Establishments primarily engaged in providing instruction and training in a wide variety of subjects and those primarily engaged in providing health care by diagnosis and treatment are not included in this sector.

541 - Professional, scientific and technical services

This subsector comprises establishments primarily engaged in activities in which human capital is the major input. These establishments make available the knowledge and skills of their employees, often on an assignment basis. The individual industries of this subsector are defined on the basis of the particular expertise and training of the service provider.

The main components of this subsector are legal services; accounting, tax preparation, bookkeeping and payroll services; architectural, engineering and related services; specialized design services; computer systems design and related services; management, scientific and technical consulting services; scientific research and development services; and advertising, public relations, and related services.

The distinguishing feature of this subsector is the fact that most of the industries grouped in it have production processes that are almost wholly dependent on worker skills. In most of these industries, equipment and materials are not of major importance. Thus, the establishments classified in this subsector sell expertise. Much of the expertise requires a university or college education, though not in every case.

Establishments primarily engaged in providing instruction and training in a wide variety of subjects and those primarily engaged in providing health care by diagnosis and treatment are not included in this subsector.

5412 - Accounting, tax preparation, bookkeeping and payroll services

This industry group comprises establishments primarily engaged in auditing accounting records; designing accounting systems; preparing financial statements; developing budgets; preparing tax returns; processing payrolls; bookkeeping; and billing.

54121 - Accounting, tax preparation, bookkeeping and payroll services

This industry comprises establishments primarily engaged in auditing accounting records; designing accounting systems; preparing financial statements; developing budgets; preparing tax returns; processing payrolls; bookkeeping; and billing.

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