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UA Local 421

UA Local 421 is headquartered in Charleston, South Carolina, and serves approximately 1400 Plumbers, Pipefitters, Welders, HVAC-R Service Techs, and Lead Burners across North and South Carolina. This Local Union was chartered on October 1, 1997, by The United Association through the consolidation of 5 different Locals in North and South Carolina.

Local 421 offers its members apprenticeship and continuing education programs through Mechanical Trades Carolina nonprofit organization that specialize in training plumbers, pipefitters, and HVAC technicians. Additionally, members and their families may benefit from health and welfare insurance, pension, and annuity plans.

To learn more about UA Local 421 and its benefit programs, please, visit their website,

Pay UA Local 421 Automatically with HCM TradeSeal:

To automate payroll and reporting for this union: open HCM TradeSeal, go to "Trade Intelligence" and add PPF 421 to your list of unions. Adding this local will enable HCM TradeSeal to:

  • Auto-calculate of UA Local 421 Journeyman and/or Apprentice rates
  • Calculate and account for for UA Local 421 union benefits
  • Generate automatic union reports for UA Local 421
  • Simplify union audits for UA Local 421
  • Generate Certified Payroll reports for UA Local 421 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 UA Local 421.