How to build an HR department from scratch

Building an HR department is mostly done in the wrong order: a company in people-pain hires an HR manager, hands them a decade of undocumented history, and expects systems to emerge. The reliable order is the reverse — put the basic structure in place first, then hire someone to run and extend it. This guide covers both the structure and the hiring, for a company going from zero to a functioning HR department.

Stage one: systematize before you hire

• Consolidate employee records into one structured system — who works here, in what role, since when, with contracts and documents attached. This single step answers half of all future HR questions.
• Write the five policies that generate the most questions: working hours, leave, conduct, pay dates, and how to raise a problem. One page each, honestly worded.
• Standardize the two repeating processes: a hiring checklist (role definition through offer) and an onboarding checklist (before day one through day 90).
• Assign interim ownership — one named person (often operations or the founder) owns HR questions until the hire, so answers stay consistent.

Stage two: the first HR hire

The first dedicated HR hire — typically justified somewhere between 20 and 50 employees — should be a generalist who has personally run records, hiring, and employee issues at a company slightly larger than yours: they have seen what your next two years look like. Resist hiring a specialist (a recruiter, a payroll administrator) as employee number one in HR; you need someone who can do an adequate job of everything before anyone does a perfect job of one thing. Title matters less than scope: the mandate is "own the employee lifecycle."

The new HR function’s first 90 days

• Days 1–30: audit what exists — records completeness, contract coverage, policy gaps, any live disputes. Output: a prioritized gap list, not a transformation plan.
• Days 31–60: close the compliance-critical gaps first — missing contracts, unrecorded employment changes, mandatory-training lapses. Boring on purpose; this is the risk layer.
• Days 61–90: take over the living processes — run the next hire end to end, onboard the next joiner, hold the first structured exit interview. Output: processes that run without the founder.

Scaling stages after the first hire

The common pattern afterward: a second generalist or a dedicated recruiter around 75–120 employees (whichever pain is louder), specialization into recruiting/operations/people-development past 150, and an HR leadership role when headcount planning becomes a board topic. At every stage the ratio to watch is roughly one HR person per 50–100 employees, adjusted for turnover — high-turnover industries sit at the low end. The systems from stage one remain the foundation throughout; EmployDB’s free records platform is built to be exactly that layer, from the first employee to the point where your HR department has its own org chart.