The Occupational Base for Sedentary Work
The term "occupational base" means the approximate number of occupations that an individual has the RFC to perform considering all exertional and nonexertional limitations and restrictions. (See SSR 83-10 [cite omitted]) A full range of sedentary work includes all or substantially all of the approximately 200 [Note 5] unskilled sedentary occupations administratively noticed in Table No. 1.
\5\ The regulations specify that this is an approximation. The revised fourth edition of the Dictionary of Occupational Titles and its companion volumes (the DOT, 1991) lists 137 separate occupations.