Chief of Staff
Battle testedWhen to hire one, which kind, and what they should own. Compared with an executive assistant, a COO and an ops lead.
When do companies hire one?
Every source’s headcount claim on one axis. They do not agree, so there is no benchmark.
The rust line follows the headcount on the instrument. Drag it here too.
Should you hire one?
Eight questions. The rust line is your path. Each faint branch is where the other answer leads. Turn the dial to your stage; slide or type your headcount.
Can you name one specific, repeating problem that eats your time?
- Yes: More questions
- No: Do not hire yet
Is more than 70% of the work calendar, inbox and travel?
- Yes: Hire an executive assistant
- No: More questions
Is the work inside one function only?
- Yes: Hire a head of that function
- No: More questions
Is it cross-functional work only you can resolve, with a quarter of it queued?
- Yes: More questions
- No: Wait, or go fractional
Will you give written decision rights, not only tasks?
- Yes: More questions
- No: Fix delegation first
Should this person manage people day to day?
- Yes: Hire a COO or ops lead
- No: More questions
Which stage are you at?
- Seed: More questions
- Series A: More questions
- Series B: More questions
- Series C+: More questions
Is the pain business fundamentals you do instead of finding product-market fit?
- Yes: Hire an Early Team Generalist
- No: Wait, or go fractional
Are heads of function in place, and the pain is work that crosses them?
- Yes: Hire a Conductor
- No: Hire the missing heads first
Are some exec seats empty, with nobody but you owning strategy?
- Yes: Hire a Functional Lead Stand-In
- No: Hire a Conductor
Are product-market fit and strategy set, and the board, investors and customers need your time?
- Yes: Hire a CEO Brain Extension
- No: Hire a Functional Lead Stand-In
Do not hire yet
Write the problem down first, then run this again. The role works when you can name the exact problem it solves.
Hire an executive assistant
At 70% admin or more you need an assistant. A Chief of Staff keeps admin at about 20% or less.
Hire a head of that function
Or a generalist ops lead. A Chief of Staff is not a stand-in for a missing function lead.
Wait, or go fractional
Hired without a queue of work, a Chief of Staff sits idle. Use a fractional or interim operator until coordination itself is the job.
Fix delegation first
Hand over tasks but not trust, and the role turns into coordination overhead.
Hire a COO or ops lead
A Chief of Staff manages no one. Running teams and functions day to day is a COO or ops lead job.
Hire an Early Team Generalist
2 to 3 years in fast-moving startups, working as an individual contributor. Write the charter around finance, payroll, legal admin, recruiting and vendors, so you stay on product.
Hire a Conductor
4 to 6 years of experience. Strategy is largely set, and the work is getting initiatives across functions delivered.
Hire the missing heads first
Then an Early Team Generalist. A Chief of Staff cannot stand in for leaders you do not have yet.
Hire a Functional Lead Stand-In
6 to 8 years of analytical work, with startup experience. They cover the empty seats while you search.
Hire a CEO Brain Extension
10 or more years of operating experience, acting as your proxy with written decision rules. Not a second CEO.
Answer the last question to see your outcome.
Stage
Who handles what
Set by the dial on the instrument. It follows your headcount until you turn it.
- Runs it
- Founder, or a Chief of Staff who runs finance, payroll and legal admin.
- You keep
- Product, sales, and the final say on hires and money.
- Hand off
- Finance rhythm, payroll, contracts and legal admin, vendors.
My stance
Whatever moves the company forward: product, sales, content, finance, legal, hiring, events, even cold calls.
- Runs it
- Chief of Staff or ops generalist, owning finance, payroll, legal admin, vendors and hiring logistics.
- You keep
- Vision, product, first sales, and the final say on every hire.
- Hand off
- Finance rhythm, payroll, contracts and legal admin, vendors, tooling, the compliance calendar, onboarding.
My stance
A good Chief of Staff can handle finance, payroll and legal, just like I do.
- Runs it
- Chief of Staff as a Conductor, or a Head of Ops.
- You keep
- Strategy, key hires, investors and culture.
- Hand off
- Operating rhythm, priorities, the decision log, cross-functional projects, the board pack.
My stance
The cadence grows out of the fixes. Each problem solved becomes part of a system you keep improving.
- Runs it
- Chief of Staff, plus a COO-style ops lead if people need managing.
- You keep
- Exec hiring, the board and the big bets.
- Hand off
- Exec team rhythm, the planning cycle, special projects, cover for empty seats.
My stance
With reports it is no longer a Chief of Staff. It is a team or a department, often the COO seat if there is none.
- Runs it
- A CEO Brain Extension plus a small team of 1 to 3.
- You keep
- External relationships, the board, capital, final org design calls.
- Hand off
- Internal cadence, executive communications, cross-company programmes.
My stance
Some companies keep the role as the founder’s proxy. Others grow it into a department. It depends on the person.
The first 90 days
A sequence with an owner, a time cost and a document at each step.
Days 1 to 30
Listening tour, relationship map, operating diagnosis, founder working norms.
Chief of Staff, 10 to 15 h a week
Operating diagnosis
Days 30 to 60
One visible fix: the leadership meeting, the priority list or the decision log.
Chief of Staff, one fix shipped
One-fix proposal
Days 60 to 90
Take over a standing rhythm: the leadership meeting, monthly metrics or the board pack.
Chief of Staff, 2 h prep a week
Cadence calendar
Day 90
Review against the charter. Write down the 10 to 20% of the mandate left open.
Founder and Chief of Staff, 1 hour
90-day review
Efficiency savers
What each step saves. Where nobody publishes the number, it says estimate.
Keep admin at or below 20%
Stops the role turning into an assistant job.
a16z: primary source (opens in a new tab)Written decision rights sheet
1 to 2 hours a week of founder questions.
Estimate, no published data: estimateWeekly CEO and Chief of Staff sync
Replaces 3 to 5 ad hoc pings a day.
Estimate, no published data: estimateAn assistant for logistics
Assistant pay is lower. US Chief of Staff cash medians run from USD 116K to 187K, by sample.
Salary surveys: secondary source (opens in a new tab)Handover planned at month 18 to 24
Overlap with the successor, less lost context.
a16z: primary source (opens in a new tab)
How this hire goes wrong
Failure modes
- Glorified assistant
Admin creeps past 20%. Check every quarter and add an assistant.
- Title, no ownership
Give them a standing rhythm to own by day 90.
- Delegated tasks, not trust
Write the decision rights down.
- Special projects take over
Cap them. The role is not a bucket.
The biases behind them
- Halo effect
A consulting brand wins the room. Test with a real problem from your business.
- Similarity bias
You hire a mirror. Write the scorecard first and score alone.
- Authority bias
An investor’s friend. Same scorecard for everyone.
- Bandwagon
Everyone has one. Name the problem first.
Where the evidence disagrees
When to hire
Early
First ops or Chief of Staff type person at 8 to 15 people. Bain Capital Ventures maps a generalist to seed.
Echai summary: secondary source (opens in a new tab)Late
Typically essential between 50 and 150 people. a16z marks 20 or more as a small organisation.
Underdog: secondary source (opens in a new tab)Same title, different jobs. At seed it is an ops generalist. At 50 to 150 it is a coordination role.
Promote from inside, or hire from outside
McKinsey: nearly two thirds are appointed internally, 80% at organisations over 50,000 people. Underdog: 64% of startup hires are external. Different samples.
McKinsey, via MIT: secondary source (opens in a new tab)Rules by country
Up to six months, with two weeks’ notice. After that, four weeks to the 15th or the month end.
Works council consent
BetrVG §99: primary source (opens in a new tab)With more than 20 eligible employees and a works council, it must consent before each hire. Silence for one week counts as consent.
Contract title
Practice: practiceThe title can stay in English. Match the contract wording to the duties, for example Head of CEO Office.
A contract term, not a law. State its length and conditions in the written statement, which is due on day one.
Startup Chief of Staff basic salary is normally GBP 70,000 to 100,000.
Reported grants for early hires run from 0.009% to 2.0% across 18 self-reported submissions.
Cash medians run from USD 116K to 187K depending on the sample. Do not average them.
General information, last checked 29 Oct 2026. Not legal or tax advice.
Disagree with a stance, or have data that should be here?
Email me