Fractional HR vs. a full-time CHRO: how to choose

A full-time chief people officer in North America typically carries a base salary in the mid-$200,000s, before bonus, equity, benefits and the support role they will ask for in month three. A fractional engagement at two days a week costs a fraction of that, and can be paused.

That comparison is accurate and it convinces a lot of founders. It is also the least interesting reason to choose fractional. The reason that holds up over twelve months is not cost — it is the shape of the work.

Under roughly 150 employees, senior HR demand is spiky. You might go three weeks without a genuinely executive people question, then spend four days on a single termination, a board deck, and a compensation review that has to be finished before Thursday.

A full-time CHRO in that environment is either underused or filling the gaps with work that a strong HR generalist should do. Spiky demand rewards elasticity. A fractional leader can be three days one month and half a day the next, and nobody has to pretend the calendar is full.

There is a threshold, and it is usually somewhere between 200 and 400 employees depending on how distributed and how regulated you are. Past it, the volume of employee relations, manager coaching, and compliance work stops being spiky and becomes continuous.

Full-time also wins when the role is transformation rather than maintenance: a merger, a restructuring, a union campaign, an IPO readiness programme. Those need someone who owns the outcome exclusively and is in the building every day.

In practice the strongest configuration is rarely all-or-nothing. A fractional CHRO holds the strategy, the board relationship and the escalations, while an HR manager or generalist runs the operating rhythm underneath.

That arrangement keeps the senior judgement in the room where decisions are made, and keeps the transactional load with someone who is there full-time. It is also cheaper than hiring a CHRO who then spends 40% of their week on onboarding paperwork.

If you are weighing the two, work through the five questions below. If three or more land on the right-hand column, start fractional and revisit in twelve months.