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.
They should be able to concentrate on detailed work for long periods and be able to bend, stoop, and work in awkward positions. In addition, welders need to be adaptable, as it is becoming increasingly common for welders and cutters to receive cross-training for other production jobs. The Armed Forces operate welding schools as well. Some employers provide training to help welders improve their skills. Courses in blueprint reading, shop mathematics, mechanical drawing , physics, chemistry and metallurgy are helpful.