What Does a Welder Do? Duties, Skills, and Work Environment

What a Welder Does

Welders join or cut metal parts using hand-held or remotely controlled equipment (U.S. Bureau of Labor Statistics, 2025). In practice that means turning a drawing into a finished assembly: reading the print, measuring and marking the stock, clamping or tacking parts into position, then running the weld to the specification the drawing calls for.

Where that happens varies more than the work itself. In a manufacturing plant you may weld the same subassembly repeatedly on a fixture, to a set cycle time. In a fabrication shop you might work from one-off prints for a customer. On a construction site, in a shipyard, or on a pipeline crew, you weld in place — overhead, in trenches, on scaffolding — and the inspection standard is usually tighter.

You rarely work alone. Welders take direction from fitters, supervisors and inspectors, and hand off to painters, machinists or quality staff. On code work, your weld is checked visually and sometimes tested before the job moves on.

Related roles in the same occupation group include cutters, solderers and brazers (U.S. Bureau of Labor Statistics, 2025).

Core Duties and Responsibilities

• Read and interpret blueprints, weld symbols and written specifications before striking an arc (U.S. Bureau of Labor Statistics, 2025).
• Calculate and measure dimensions on parts to be welded, and mark or lay out material from the print (U.S. Bureau of Labor Statistics, 2025).
• Inspect structures and materials for flaws, fit-up gaps and contamination before and after welding (U.S. Bureau of Labor Statistics, 2025).
• Weld components in flat, vertical, horizontal or overhead positions to the specification on the drawing (U.S. Bureau of Labor Statistics, 2025).
• Monitor the welding process and adjust heat, voltage, wire speed and gas flow so the metal does not warp, undercut or burn through (U.S. Bureau of Labor Statistics, 2025).
• Operate the process the job calls for — stick (SMAW), MIG (GMAW), flux-cored (FCAW) or TIG (GTAW) — and change consumables, electrodes and shielding gas to match the base metal.
• Cut and trim metal with an oxy-fuel torch, plasma cutter, grinder or cut-off saw.
• Clamp, tack and fixture parts so the assembly holds alignment while you weld out the joint.
• Maintain and repair welding machines, torches, leads, regulators and extraction equipment (U.S. Bureau of Labor Statistics, 2025).
• Grind, wire-brush and clean finished welds, then log work, heat numbers or inspection results as the job requires.

A Typical Day

Start of shift

Clock in, review the work order or print packet, and check the machine: ground clamp, leads, gas bottle pressure, wire feed. Put on the hood, jacket, gloves and respirator or face protection the job calls for — protective equipment is worn every day in this occupation (O*NET OnLine, U.S. Department of Labor).

First two hours

Lay out and fit the first assembly. Measure from the print, mark, clamp and tack. On repeat production work you load the fixture and start running parts to cycle time.

Mid-morning

Steady arc time. You stop to clean spatter, change wire or electrodes, adjust amperage as the plate heats, and check fit-up on the next piece while the last one cools.

The unpredictable part

A weld fails visual inspection, a part arrives out of tolerance, or a machine starts feeding erratically. You gouge out the bad section and reweld, shim the fit-up, or swap a liner and contact tip — and the rest of the day's schedule shifts around it.

Afternoon

Weld out the remaining joints, grind and dress the finished work, and present pieces to the inspector or supervisor.

End of shift

Shut down gas, coil leads, sweep the booth, restock consumables, and write up progress or hand over to the next crew on a round-the-clock operation.

Work Environment

• Indoors in a shop or plant, or outdoors on construction, shipyard and pipeline work, where conditions include weather and confined or awkward positions (U.S. Bureau of Labor Statistics, 2025).
• Standing, bending, stooping, kneeling and reaching for most of the shift, often holding a position while welding overhead or in tight spaces (U.S. Bureau of Labor Statistics, 2025).
• Exposure to contaminants — welding fume, dust and grinding particulate — every day (O*NET OnLine, U.S. Department of Labor).
• Distracting or uncomfortable noise levels every day from grinders, hammering, air tools and plant machinery (O*NET OnLine, U.S. Department of Labor).
• Common protective and safety equipment worn every day: welding helmet with the correct shade lens, flame-resistant jacket and gloves, safety glasses, steel-toe boots and hearing protection (O*NET OnLine, U.S. Department of Labor).
• Many manufacturing firms run shifts so production continues around the clock, which means nights, weekends and rotating schedules in some plants (U.S. Bureau of Labor Statistics, 2025). Travel ranges from none for shop work to near-continuous for pipeline and field crews — ask about it at interview.

Skills and Qualifications

Salary and Job Outlook

Pay for welders is usually hourly, with overtime after 40 hours, shift differentials for nights, and per diem on travel jobs. Rates vary by state, industry and whether the work is code-certified or production. Check the figures below before you negotiate — they are updated annually.

How to Get Started

1. Finish a high school diploma or equivalent, the typical entry-level education for the occupation, and take shop math, geometry and any metalworking class offered (U.S. Bureau of Labor Statistics, 2025).
2. Enroll in a technical or vocational school welding program, or apply to an apprenticeship — both are named training pathways for welders (U.S. Bureau of Labor Statistics, 2025). Ask each program which processes it covers: SMAW, GMAW, FCAW and GTAW.
3. Complete OSHA safety training, commonly required by employers, and check your state and city licensing rules for the kind of welding you want to do (U.S. Bureau of Labor Statistics, 2025).
4. Build a basic kit and a sample set: helmet, flame-resistant jacket, gloves, boots, and coupons showing fillet and groove welds in more than one position.
5. Pass a welder performance qualification test in the position and process your target employers use. Most shops test applicants on site; ask what the test involves when you apply.
6. Apply directly to fabrication shops, manufacturing plants, shipyards and construction contractors, and register with the apprenticeship sponsors or union halls in your area.