Sheet metal workers held about 198,000 jobs in 2004. Nearly two-thirds of all sheet metal workers were found in the construction industry. Of those employed in construction, almost two-thirds worked for plumbing, heating, and air-conditioning contractors; most of the rest worked for roofing and sheet metal contractors. Some worked for other special trade contractors and for general contractors engaged in residential and commercial building. One-quarter of all sheet metal workers work outside of construction and are found in manufacturing industries, such as the fabricated metal products, machinery, and aerospace products and parts industries. Some sheet metal workers work for the Federal Government.
Compared with workers in most construction craft occupations, relatively few sheet metal workers are self-employed.