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UA Local 421

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,

HCM TradeSeal support for UA Local 421:

  • Auto-calculation of UA Local 421 Journeyman and/or Apprentice rates
  • Calculation and accounting support for UA Local 421 union benefits
  • Automatic union reports for UA Local 421
  • Union audit support for UA Local 421
  • Accurate Certified Payroll reporting for UA Local 421 work classes

How to Add UA Local 421 to TradeSeal

This Local's unique TradeSeal identifier is: PPF 421

Go to HCM TradeSeal > Data Manager and choose "Benefits, Deductions and Fringes" to add PPF 421 fringe benefit calculations and automatic remittance reporting.

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.