Because some metals may give off toxic gases and fumes as they melt, Federal regulations require ventilation to meet strict guidelines to minimize these hazards. Occasionally, some workers are in contact with rust, grease, and dirt on metal surfaces. Some welders are isolated for short intervals while they work in booths constructed to contain sparks and glare. Welders often work in a variety of awkward positions, having to make welds while bending, stooping, or working overhead. In some settings, however, working conditions are much better and there are few hazards or discomforts.
Overtime is sometimes necessary to complete special projects.
Employment Welders, cutters, and welding machine operators held about 453,000 jobs in 1996. About 9 out of 10 welders and cutters were employed in manufacturing, services, construction, or wholesale trade. The majority of those in manufacturing were employed in transportation equipment, industrial machinery and equipment, or fabricated metal products. All welding machine operators were employed in manufacturing industries, primarily fabricated metal products, machinery, and motor vehicles. The Armed Forces operate welding schools as well.