The trigger is workload, not a magic headcount
A small team with rapid hiring, remote employees or complex benefits may need support sooner than a larger stable business. Track interruptions, errors and unresolved tasks. Choose the smallest scope that fixes a real operating gap.
Keep founder judgment where it matters
Culture, hiring standards, compensation and performance expectations remain leadership responsibilities. A provider should reduce administrative drag and add process discipline without distancing founders from employees or important decisions.
For related guidance, read when a small business should outsource HR and HR outsourcing for small businesses.