What Does a Chief of Staff Do? A Week in the Life at a Startup

"Chief of staff" is one of the most loosely used titles in startups. Sometimes it means a senior executive assistant. Sometimes it means a strategic operator who runs the company's rhythm and represents the CEO across the business. The two are very different hires.

This guide shows what a chief of staff actually does in a typical week, the main versions of the role, what it pays, and how to tell whether you need one yet.

The Short Answer

A chief of staff (CoS) is a senior operator who extends the CEO's reach. They:

Run the company's operating rhythm: weekly priorities, leadership meetings, planning and reviews
Drive cross-team projects that don't belong to any single department
Prepare board and investor updates
Represent the CEO in meetings and decisions the CEO can't attend
Spot and fix problems before they reach the CEO

The core difference from an executive assistant: an EA manages the CEO's time; a chief of staff manages outcomes across the company on the CEO's behalf.

A Week in the Life

Every company is different, but a startup chief of staff's week often looks like this.

Monday: Setting the week's priorities

The week starts with a short sync with the CEO to agree the three to five things that matter most, cross-checked against what stalled last week. A good chief of staff arrives with a draft priority list, not a blank page. Then they run or prepare the leadership team meeting, making sure each owner leaves with clear actions.

Tuesday: Cross-team follow-through

This is where the role differs most from an EA. The chief of staff might sit in on a product review, follow up with the marketing lead on a launch date, and notice that sales promised a customer something engineering hasn't planned. None of this needs the CEO in the room. It needs someone with enough context and authority to represent the CEO's intent accurately.

Wednesday: Board and investor preparation

Pulling together metrics, commentary and supporting documents for a board meeting or investor update. It's not formatting a deck. It's knowing which numbers matter this quarter, which risks need careful framing, and which questions are likely to come up.

Thursday: Solving problems before they escalate

A vendor issue, a conflict between two teams, a project that's quietly stalled. The aim is for the CEO to hear only about the things that genuinely need their judgment, along with a recommendation.

Friday: Review and next week's plan

Friday closes the loop: what got done, what didn't and why, and what should change next week. This is also when a good chief of staff pushes back, including on the CEO, when the CEO's own calendar or habits are creating the bottleneck.

The Four Main Types of Chief of Staff

Type	Focus	Typical background
Operator	Runs the operating rhythm, planning and cross-team execution	Operations, consulting, program management
Strategist	Special projects, strategy, market analysis, fundraising support	Consulting, investment banking, venture capital
Integrator	Keeps the leadership team aligned and communication flowing	Senior management, people operations
Senior executive assistant	Calendar, communications, meetings and the CEO's priorities, with more authority than a typical EA	Executive assistant roles

Knowing which type you need matters more than the title. Many founders who say they want a chief of staff actually need the fourth type, which is a strong executive assistant.

What a Chief of Staff Earns

According to ZipRecruiter, the average startup chief of staff salary in the US was $124,409 a year as of July 2026, with most falling between $93,000 and $146,000, and the top 10% earning $171,500 or more. Salaries are higher in major hubs such as San Francisco and New York, and senior hires at later-stage companies often receive equity on top.

For comparison, the US Bureau of Labor Statistics puts the median executive assistant salary at $76,590, and a dedicated remote executive assistant typically costs $1,300-$3,000 a month.

Chief of Staff vs. Executive Assistant

	Executive assistant	Chief of staff
Main focus	The CEO's time and communications	Company-wide outcomes
Works on	Calendar, inbox, meetings, travel, follow-ups	Priorities, projects, leadership meetings, board preparation
Authority	Acts for the CEO on logistics	Acts for the CEO with the team
Seniority	Support role	Senior leadership role
US pay	$76,590 median salary	About $124,000 average at startups
Best for	Founders who are the bottleneck	CEOs of growing teams with too many moving parts

For a three-way comparison including virtual assistants, see executive assistant vs. virtual assistant vs. chief of staff.

Do You Actually Need One?

Most early-stage founders don't, at least not yet. A chief of staff assumes there's already a team and enough complexity that someone needs to coordinate across functions on the CEO's behalf. If you still know what's happening in every part of the business, a strong executive assistant will solve most of the problem at a fraction of the cost.

Signs you're ready for a chief of staff:

You have a leadership team, and keeping it aligned takes a large share of your week
Important projects fall between teams because nobody owns them
You're preparing board materials, investor updates and planning cycles on your own
You miss things not because you're disorganised, but because there are more moving parts than one person can track

A common path is to hire an executive assistant first, then a chief of staff once the company reaches a size where cross-team coordination becomes a full-time job. The EA's documented processes make the chief of staff's job easier on day one.

What to Look for When Hiring

Judgment over task completion: ask for an example of a decision they made without checking in, and what happened
Credibility across functions: they need to hold their own in product, sales and finance conversations
Strong writing: much of the role is representing your voice to investors, the team and partners
Discretion: they'll handle sensitive information about people, money and strategy
Follow-through: the value is in things getting finished, not just tracked
A clear mandate from you: the role fails if the team doesn't know the chief of staff speaks for you

Frequently Asked Questions

What does a chief of staff do at a startup?

They run the company's operating rhythm, drive cross-team projects, prepare board and investor materials, represent the CEO in meetings and decisions, and solve problems before they reach the CEO.

How much does a startup chief of staff earn?

The average startup chief of staff salary in the US was about $124,000 in 2026, according to ZipRecruiter, with most between $93,000 and $146,000. Senior hires in major cities earn more, often with equity.

What's the difference between a chief of staff and an executive assistant?

An executive assistant manages the CEO's time, communications and logistics. A chief of staff manages outcomes across the company and has authority to act on the CEO's behalf with the team.

When should a startup hire a chief of staff?

Usually once there's a leadership team and enough cross-team complexity that coordination has become a large part of the CEO's week. Before that, a strong executive assistant is usually the better first hire.

Can an executive assistant become a chief of staff?

Yes. Many chiefs of staff started as executive assistants. The move requires broader business knowledge, credibility with the leadership team and a clear mandate from the CEO.

If you're deciding between an executive assistant and a chief of staff, book a call and we'll help you work out which fits your stage.