Lumber
“Can a construction-specific payroll platform become the financial and operational OS for every contractor — owning payroll, compliance, HR, field ops, and embedded financial services in one AI-native stack?”
Founded in 2023, Lumber entered the market as a construction-specific payroll and time-tracking SaaS, targeting the unique complexity of union wages, prevailing wages, and certified payroll. The platform rapidly expanded beyond payroll into field operations, HR, and benefits. By 2025, Lumber added embedded financial services (Workers' Comp insurance, Earned Wage Access) and launched a suite of AI Agents — positioning itself as a full construction workforce OS. The Series A in 2024 was followed by expansion into Canada, signaling ambitions beyond the US market.