Fatalities in the Oil and Gas Extraction Industry (FOG)

Key FOG Variable Descriptions

The FOG database collects several different types of information (i.e., variables) on each fatal incident and each worker who died in the incident. Variables about the incident are those that would be common to all fatalities associated with the incident, such as the date the event occurred and the location of the incident. Other variables are specific to each fatally injured worker, such as the worker’s age, years of experience, and cause of the fatality.

Below are the definitions for key FOG variables; these are the most commonly reported variables in FOG datasets, publications, and products.

Worker level variables: Industry Group

In FOG, the industry group is determined by the North American Industry Classification System (NAICS)external icon code of the employer. A company’s NAICS code is based on its primary business.

FOG includes worker fatalities related to U.S. oil and gas extraction (”upstream” sector of the oil and gas industry), which involves the exploration for crude oil or natural gas fields and the drilling and operating of wells that bring crude oil or natural gas to the surface (see Inclusion Criteria for more information). The oil and gas extraction industry is described by NAICS codes 211, 213111, and 213112 (see Oil and gas extraction industry groups below for full NAICS descriptions). However, employers from other industries (i.e., other NAICS codes) also often conduct oil and gas extraction work as contractors. Fatalities resulting from oil and gas extraction activities conducted by these contractors are also included in FOG.  These industry groups predominantly include NAICS codes 2389, 4842, 5324, 54324 (see Examples of other industry groups that do work in oil and gas extraction below for full NAICS descriptions). Each fatality in FOG is assigned to one industry group.

Industry Groups

Page last reviewed: April 16, 2020