Role types

What are the different types of Chief of Staff roles?

Chief of Staff roles vary by principal, by company type and by setting, and one of the clearest splits is full-time against fractional. A full-time Chief of Staff works for one principal. A fractional Chief of Staff works part time, often for several companies, in one of three shapes. Embedded engagements run set days or hours each week for months and build an operating rhythm. Project engagements deliver one outcome with an end date. Interim engagements give near full-time cover for a fixed period while a full-time Chief of Staff or COO is hired, on leave or replaced.

The core work stays the same in every type: priorities and decisions, the operating rhythm, communication up and down, and cross-functional projects. What changes is context. A full-time Chief of Staff hears the hallway version of every problem; a fractional one gets the version people bring to a scheduled call. At seed or Series A, embedded work is usual because the rhythm doesn't exist yet. Larger companies hire fractional Chiefs of Staff mostly for interim cover or for a functional leader who doesn't yet have budget for a full-time role.

Should I hire a fractional or a full-time Chief of Staff?

Start fractional if you can't yet name the work you want handed over, or if the budget covers 10 to 20 hours of senior help while a full salary plus equity is still a year away. A fractional Chief of Staff will show you what that work is. Go full-time when you know you need the role and the work depends on someone in the room every day, for example when the founder wants a thought partner on everything.

On our labeled assumptions, a 15-hour-a-week retainer lands at about $11,400 a month, against about $18,200 a month for a full-time hire at the $167,954 average base in the Chief of Staff Network's 2025 Salary Report. The client pays about 60% of a full-time hire's cost for about 40% of the hours.

Other signs that fractional fits: there is no operating rhythm, the founder routes every cross-team question, or a fundraise or board meeting is coming. Open conflict in the leadership team or a crisis points the other way, because both need someone there every day. For the full-time process, see how to hire a Chief of Staff.

When should a company hire an interim Chief of Staff?

Hire an interim Chief of Staff when you already know you need the full-time role but can't fill it yet. Interim work gives near full-time cover for a fixed period, for continuity while a full-time Chief of Staff or COO is hired, on leave or replaced. It differs from embedded fractional work, which runs part time for months, and from project work, which ends with one deliverable.

Larger companies hire fractional Chiefs of Staff mostly for interim cover or for a functional leader who doesn't yet have budget for a full-time role. Interim cover needs someone senior enough to step in without a ramp. Agree a one-page scope before day one: the principal, the outcome, the hours, what the person owns and doesn't, how they report and when you review.

If the company hires someone else full-time, the interim Chief of Staff's last project can be the job description and the search. If the company turns out not to need a Chief of Staff yet, name the internal owner for each process a month before the end date. Our guide to the fractional Chief of Staff covers all three shapes of engagement.

What is the difference between a fractional Chief of Staff, a consultant and an executive assistant?

A consultant advises and leaves, an executive assistant manages the leader's time, and a fractional Chief of Staff runs the operating work across the team for as long as the engagement lasts. The outputs differ: a consultant leaves a deck or plan, an executive assistant leaves a leader whose time goes to the right things, and a fractional Chief of Staff leaves running processes and finished projects.

Decision rights differ too. A consultant usually has none. An executive assistant holds the calendar and logistics. A fractional Chief of Staff gets delegated decisions for named areas, such as meeting agendas and project timelines. Compared with a full-time Chief of Staff, the fractional one holds partial context, from scheduled access, and so needs a narrower mandate.

Two checks tell you what you are really buying. If most of the hours go to calendar and inbox, the company is buying administrative support with a senior title. If the engagement ends with a deck and nothing running, it was a consulting project. For the full-time comparison, see Chief of Staff vs executive assistant.

When is a fractional Chief of Staff the wrong choice?

A fractional Chief of Staff is the wrong choice when the problem needs someone in the room every day, usually because the answer depends on who trusts whom. Open conflict in the leadership team, such as co-founders who disagree on strategy, needs a full-time Chief of Staff or a coach, because a fractional one gets pulled into a side. A crisis, such as a cash crunch or a key departure, needs daily decisions, and the team won't wait for a scheduled afternoon. A founder who wants a thought partner on everything wants the full-time job, and part-time hours will feel like rationing. If one function is broken, such as sales, hire a leader for that function.

The reason is context. Structured work with a clear output transfers well to part-time hours: a weekly leadership meeting, a planning cycle, board prep or two or three stuck projects. Political judgment calls do not. A fractional Chief of Staff can still take a narrow project inside a hard situation, such as board prep during a crisis. Our fractional Chief of Staff guide shows how to scope one.

Can a fractional or part-time Chief of Staff role become full-time?

Yes, and it often does. Cher Murphy at Sydecar and David Moon at Taxwire both started on contracts of about 20 hours a week that became full-time Chief of Staff roles, as they told our podcast. At Taxwire there was no job description, and David joined full time after about two weeks. Cher's hours rose past 20, then 25, then 30 while Sydecar raised its Series A, and she became Chief of Staff officially a few months after she started.

Convert when the work no longer fits in its hours, when the missing context starts costing the company, or when the principal wants this person in every meeting. Quieter signals: the fractional Chief of Staff keeps learning about decisions after they are made, or the team waits for their scheduled days to move. If the work is still project-shaped, keep it fractional.

Agree before the engagement starts what would trigger a conversation about going full-time. If you convert, set the full-time offer from the benchmarks for its level and company size, and leave the fractional rate out of it. Our guide to the fractional Chief of Staff covers the three ways an engagement can end.

Should I become a fractional Chief of Staff?

Become a fractional Chief of Staff after you have done the full-time job, not before. The title promises that you can make one leader more effective across a whole company. If you have only run projects, you are selling project management under a different name, and experienced buyers can tell.

The path is growing. Fractional and advisory titles rose from about 1% of Chief of Staff next moves in 2020 to nearly 4% in 2025, according to the Chief of Staff Network's Pathways Report (more than 2,100 moves). Fractional work sits inside the report's consulting and advisory path, where people typically had about nine years of experience before the role.

To start, pick an offer you can say in one sentence, such as setting up the operating rhythm for Series A founders, two days a week for six months. Price it from a full-time anchor and sell through referrals: list 20 people who have seen you run something. Start with two clients, one embedded and one project, to test your systems and pricing. If you haven't held the role yet, see how to become a Chief of Staff.