Trade · ONET 47-2221.00
Ironworker
Erects structural steel, reinforces concrete with rebar, and installs metal decking and ornamental iron.
What the work looks like
Structural ironworkers unload, hoist, and bolt steel beams and columns into place as buildings rise. Rebar workers (often classified separately as reinforcing ironworkers under BLS 47-2171) cut, bend, and tie reinforcing steel in concrete forms before the pour. Ornamental ironworkers set stairs, railings, curtain wall, precast panels, and miscellaneous metals after the building is closed in. Riggers and signalpersons coordinate the crane picks that move the steel into place. Titles shift with experience: apprentice, journeyman, connector, foreman, general foreman, and steward on union jobs. The work happens at height, often on connection-only welded or bolted joints, and requires tight coordination with the crane operator, the detailer, and the other trades following behind. Every journey-level ironworker reads shop drawings, plans picks, ties off per OSHA subpart R, and verifies the connection matches the approved erection sequence.
Physical demands
- Sustained work at height (hundreds of feet is routine on structural)
- Heavy lifting and carrying of tools, bolts, and steel components
- Climbing columns and walking beams with 100 percent tie-off
- Outdoor exposure in every weather condition, year round
- Fall protection training and equipment mandatory under OSHA subpart R
- Repetitive bending and tying on rebar crews; hand and wrist load is significant
Common tools
- Spud wrench and bull pin
- Sleever bar and drift pin
- Chokers, shackles, and rigging slings
- Welder (stick or flux-core) for tacks and small welds
- Bolting gun and cordless impact wrench
- Full-body harness, retractable lanyard, and positioning lanyard
- Tie wire reel and rebar tying tools (pliers or powered)
- Burning glasses and a cutting torch for field cuts
Union and non-union paths
The Iron Workers International Union represents a substantial share of structural and reinforcing ironworkers, particularly on high-rise, bridge, and heavy industrial projects. Union apprenticeships run through joint Iron Workers / IMPACT locals, typically 3 to 4 years with separate tracks for structural, reinforcing, and ornamental. Non-union apprenticeships run through ABC chapters and direct contractor programs, commonly 3 to 4 years, with wage and benefit structures set per contractor. Rebar placement on smaller commercial and residential slabs is more often non-union; high-rise structural and bridge work is more often union. OSHA subpart R fall-protection requirements apply to both paths. Union wage schedules are public documents; open-shop wages are typically set per contractor, so ask for the schedule in writing before signing on.
How to enter
Entry routes include an Iron Workers registered apprenticeship (typically 3 to 4 years with separate tracks for structural, reinforcing, and ornamental), ABC or contractor-run open-shop apprenticeships of similar length, trade school programs focused on structural welding, and direct hire by a steel erector or rebar placer. Apprenticeships typically run roughly 4,000 to 6,000 OJT hours plus related classroom instruction under DOL registered-apprenticeship standards. Welding certification to AWS D1.1 is valuable on the structural side; rebar work emphasizes tying speed, blueprint reading, and placement accuracy. Military crosswalks exist for combat engineer, metalworker, and steelworker ratings at many locals, with advanced standing decided case by case. No state licensing regime for ironworkers exists in most states; credential value sits in welding certs, rigging/signal cards, and OSHA training.
Specialty paths in this trade
Most states license one ironworker classification, but the work splits into distinct paths with different schedules, tools, and wage schedules. Read before choosing a program.
Structural Ironworker
The core high-rise and heavy-steel classification. Erects columns, beams, girders, and metal decking as the building frame rises. Includes the connector role, who sets and bolts pieces fresh off the crane hook.
Typical scope
- Unloading and shaking out steel on site
- Raising gangs setting columns and beams to line and plumb
- Bolting crews torquing connections and installing decking
- Welding tacks and small field welds on moment connections
Entry: Iron Workers registered structural apprenticeship, typically 3 to 4 years under DOL standards. ABC and contractor open-shop programs run a similar length.
Wage note: Union structural wage schedules are public; open-shop rates are set per contractor. Ask for the schedule in writing. High-rise and premium-pay jobs (hospitals, data centers, bridges) typically sit at the top of the local rate.
Reinforcing (Rebar) Ironworker
Places, ties, and sets reinforcing steel inside concrete forms before the pour. BLS classifies rebar workers separately under 47-2171. Pay is piece-rate on some non-union rebar crews and hourly under union agreements.
Typical scope
- Reading placement drawings and bar schedules
- Cutting and bending bar in the field or receiving prefab mats
- Tying bar by hand or with a powered tier; setting chairs and spacers
- Post-tensioning cable layout on PT slabs where the local classification includes it
Entry: Iron Workers reinforcing apprenticeship, typically 3 years. Open-shop rebar placers commonly enter through direct hire with on-the-job training.
Wage note: Union reinforcing wage schedules typically sit near or slightly below the structural schedule in the same local. Open-shop rebar wages vary widely by contractor and by piece-rate structure.
Ornamental Ironworker
Installs stairs, railings, curtain wall, storefront, precast panels, and miscellaneous metals after the building is closed in. Work is closer to finish carpentry in pace and tolerance than raising-gang structural.
Typical scope
- Setting pan stairs, handrails, and guardrails
- Installing curtain wall, storefront, and window wall systems
- Setting precast concrete panels and architectural metal
- Miscellaneous metals: bollards, ladders, roof screens, access hatches
Entry: Iron Workers ornamental apprenticeship, typically 3 years. Some open-shop curtain wall and precast contractors run their own in-house training programs.
Wage note: Ornamental wage schedules typically sit at or near the structural schedule in the same local. The work is lower-exposure than raising steel but demands higher layout precision.
Rigger / Signalperson
Not a separate trade, but a specialty layer on top of any ironworker classification. Qualified riggers select gear and rig the load; qualified signalpersons direct the crane. OSHA 1926 subpart CC requires both to be qualified on most cranes in construction.
Typical scope
- Selecting slings, shackles, and spreader bars for each pick
- Inspecting rigging before use and tagging out damaged gear
- Giving hand or radio signals to the crane operator
- Planning critical picks and tandem lifts with the site superintendent
Entry: NCCCO Rigger Level I or II and Signalperson certifications. Most locals fold rigger and signal training into the journeyman classroom curriculum; open-shop workers typically take vendor-run prep courses.
Wage note: Rigger and signal certifications do not carry a separate wage schedule in most agreements, but they open the door to premium-pay roles on critical lifts, turnarounds, and crane-heavy jobs.
Residential, commercial, industrial
Ironwork is overwhelmingly commercial, industrial, and heavy-civil. Residential work rarely involves a structural ironworker outside of rebar placement on foundation slabs and the occasional steel beam in a custom home. The more useful split is commercial buildings vs industrial process work vs heavy-civil bridges and infrastructure.
Residential
Limited scope. Rebar placement on foundation slabs and footings, occasional steel-beam installs in custom homes, and ornamental handrails and stairs in larger residences. Most crews doing this work are small rebar placers or miscellaneous-metals shops rather than raising-gang ironworkers.
Commercial
Offices, schools, hospitals, hotels, retail, and data centers. Structural steel frames, metal decking, and curtain wall. The bread-and-butter of most union locals and larger open-shop erectors. Crew sizes run from small (retail, low-rise) to large raising gangs (high-rise, hospital).
Industrial
Refineries, power plants, semiconductor fabs, chemical plants, and paper mills. Heavy structural steel, pipe racks, pre-engineered metal buildings, and shutdown / turnaround work. Pay commonly sits at the top of the local schedule with significant OT stretches during turnarounds followed by slower periods.
Certifications that unlock premium work
Credentials beyond the state license. Each one opens a specific segment of work where the qualified pool is smaller.
AWS D1.1 Structural Welder Qualification ↗
D1.1 is the consensus welding code for structural steel in the United States. A current D1.1 qualification in the position and process the job calls for (typically 3G or 4G SMAW or FCAW) is the baseline credential for structural welding scope and is commonly required on moment-frame and bridge work.
Issuer: American Welding Society
NCCCO Rigger Level I and Level II ↗
Nationally recognized qualified-rigger credential under OSHA 1926 subpart CC. Level I covers routine rigging; Level II adds critical and complex lifts. Commonly required for the rigger of record on crane-heavy jobs and for turnaround work at refineries and plants.
Issuer: National Commission for the Certification of Crane Operators
NCCCO Signalperson ↗
Qualified signalperson credential under OSHA 1926.1428. Required in practice on most construction crane operations. Paired with the rigger credential on most ironworker career paths.
Issuer: National Commission for the Certification of Crane Operators
OSHA 30-Hour Construction ↗
The 30-hour Outreach course is the baseline site-safety credential for foremen and lead hands on most commercial and public-works jobs. Many general contractors require a current OSHA 30 card for anyone supervising a crew.
Issuer: OSHA Outreach Training Program via authorized trainers
Certified Welding Inspector (CWI) ↗
The senior AWS inspection credential. Opens the door to weld inspection, QA/QC, and field engineering roles after years of journeyman welding experience. Commonly required on bridge, nuclear, and high-rise projects for the inspector of record.
Issuer: American Welding Society
SENRAC / OSHA Subpart R Steel Erection Competent Person ↗
OSHA subpart R governs steel erection. The competent-person designation is commonly required on the erector's site-safety plan for structural steel. Training is offered by Iron Workers locals, IMPACT, and private providers.
Issuer: OSHA subpart R under 29 CFR 1926.750
Tool and equipment investment
Apprentice, year 1
$400 to $900 for the basics the program does not supply: full-body harness, positioning lanyard, leather work boots rated for the site, spud wrench, bull pin, tape, tie wire pliers or reel, burning glasses, and hard hat. Many locals and contractors supply the harness and fall gear; confirm at intake.
Journey level
$1,500 to $4,000 over time for a full personal kit: cordless impact gun, a second spud wrench and bull pins in multiple sizes, sleever bar, drift pins, chokers for personal use, tool belt with bolt bags, a personal harness and SRL, and PFAS-rated work boots. Most shops supply the welder, torch rig, and crane rigging.
Going independent
Ironworkers overwhelmingly remain W-2 under a steel erector, rebar placer, or curtain-wall contractor through their career. The subcontractor route exists for small ornamental, miscellaneous-metals, and rebar placement shops and typically requires a truck, a welder, a small trailer, insurance, and the contractor license the state requires for general or specialty contracting. Costs vary widely; a small ornamental shop can start under $30,000, while a structural or bridge erector requires crane access, riggers, and bonding that put the entry cost in the hundreds of thousands.
Shop-supplied tools vary by contractor. Ask during hiring which tools the employer provides (harness, welder, torch, bolts, rigging) and which come out of your pocket. Fall-protection gear is often supplied but personal fit matters, so many journeymen buy their own harness.
Wages
National median
$62,700
annual, all workers
National mean
$69,270
annual, all workers
By pilot state
BLS Occupational Outlook projections for structural iron and steel workers are published on the linked OOH page. Current demand drivers include data center buildout, bridge replacement programs under the federal infrastructure law, offshore wind foundations, semiconductor fab construction, and stadium and transit projects. Local demand varies sharply by metro and construction cycle. Check state workforce-board dashboards for metro-level projections before relocating for work.
BLS OES by-state data shown on this page is statewide median and mean, all-worker, across structural, reinforcing, and ornamental ironwork. Major union-strong metros (New York, Chicago, San Francisco, Seattle, Boston, DC) often pay 20 to 40 percent above their statewide median; right-to-work metros and rural work often pay below. Check the BLS OES metropolitan tables for structural iron and steel workers (47-2221) in your target area before relocating. Source: BLS OES by area, https://www.bls.gov/oes/current/oes472221.htm.