Ironworkers 378 logo

Ironworkers Local 378

Chartered on September 22, 1921, Ironworkers Local 378 is a mixed labor union that currently encompasses 2,500 tradespeople. The scope of work includes but is not limited to, structural steel, precast concrete, metal buildings, reinforcing steel, ornamental iron, fabrication, curtain walls, welding and rigging, and machinery moving. Local 378’s jurisdiction covers from west to east, Oakland to Vacaville, and from north to south, Lakeport to Crows Landing.

The Local 378 JATC offers its members a high-class 4-year apprenticeship program and ongoing journeyman training. All eligible members also receive various health benefits, annuities, scholarships, pension and retirement plans, mental health assistance, and more.

To learn more about Ironworkers Local 378 and its benefits programs, please visit their website at

Pay Ironworkers Local 378 Automatically with HCM TradeSeal:

To automate payroll and reporting for this union: open HCM TradeSeal, go to "Trade Intelligence" and add BSOIW 378 to your list of unions. Adding this local will enable HCM TradeSeal to:

  • Auto-calculate of Ironworkers Local 378 Journeyman and/or Apprentice rates
  • Calculate and account for for Ironworkers Local 378 union benefits
  • Generate automatic union reports for Ironworkers Local 378
  • Simplify union audits for Ironworkers Local 378
  • Generate Certified Payroll reports for Ironworkers Local 378 work classes

Watch a Video

Learn more about HCM TradeSeal by watching a brief overview video. HCM TradeSeal can automatically calculate fringe benefits and generate remittance reports for most union locals, including Ironworkers Local 378.