Behind every high-performing executive lies a solid crew—those who let them focus on the 20% of the tasks that make up 80% of the impact.
Executive assistants (EAs) and chiefs of staff (CoS) are at the frontline of this crew. They’re two powerhouse roles that keep workplaces running like well-oiled machines.
But what are the key differences between these roles, and which one does your organization need?
We’ll explore these questions and provide insider insights from these roles at —so you can make a balanced decision when evaluating the executive assistant vs. chief of staff positions for your team.
What Is a Chief of Staff?
A Chief of Staff is a trusted strategic partner to senior leadership, often seen as the “right-hand” to C-suite execs such as the CEO, CFO, and COO. This role goes beyond traditional support, focusing on high-level decision-making, project management, and cross-departmental alignment.
The importance of the role
Did you know that the Chief of Staff role has roots that stretch back to military strategy and government operations? This is because a high-ranking general on the battlefield, surrounded by chaos, usually needed someone to handle the flow of information, make sense of priorities, and ensure every moving piece was in place.
In modern times, the role evolved from the political arena, most famously in places like the White House, where the Chief of Staff became the president’s go-to person.
Fast forward to today, and the Chief of Staff is just as essential for their strategic vision in the corporate world.
👀 Fun Fact
Most Chiefs of Staff (25.7%) work in tech—much higher than in any other field. Banking and investment come next at 17.6%, reflecting a need for people who can keep big organizations in sync.
This tells us something key about the role: Chiefs of Staff thrive in fast-moving environments where CEOs need someone who helps turn vision into action while acting as the executive’s trusted proxy.
What Is an Executive Assistant?
An Executive Assistant is a master of logistics and time management, providing administrative support to executives. Their responsibilities include managing schedules, handling communication, and filling in the project management gap for smooth day-to-day operations.
The importance of the role
👀 Fun Fact
The Executive Assistant (EA) role originated in the early 20th century after the Industrial Revolution as businesses scaled. It evolved from simple clerical work and administrative tasks to highly specialized positions that included overseeing logistics and acting as gatekeepers for communication.
Today’s EAs are essential to day-to-day functioning, managing complex schedules, and handling sensitive information. While not typically responsible for broader strategic plans, they create bandwidth for executives to focus on higher-level responsibilities, making them indispensable to overall business efficiency.
Roles and Responsibilities
While both the Chief of Staff and Executive Assistant provide vital support to executives, their responsibilities differ significantly in scope and focus.
Chief of Staff
Strategic planning
A Chief of Staff is heavily involved in shaping the company’s future. They assist in developing and executing high-level strategies with the leadership team. This may include:
- Developing and overseeing the implementation of company-wide initiatives
- Leading annual planning sessions and quarterly strategy reviews
- Translating executive vision into actionable roadmaps
For example, a Chief of Staff might work alongside a CEO during a corporate merger, managing complex logistics and aligning different teams to achieve a seamless transition.
Cross-departmental coordination
Acting as a bridge between departments, the CoS resolves cross-functional challenges and bottlenecks, help prevent silos, and ensure that every department is working towards common goals.
Senior-level decision support
Chiefs of Staff frequently serve as trusted advisors, offering insights and analysis to help executives make informed decisions. They attend high-level meetings, synthesize information, and present data-driven, actionable recommendations to leadership.
Executive Assistant
Administrative support
The Executive Assistant focuses on handling everything from document preparation and filing systems to arranging travel. Their role is essential for keeping the executive’s schedule organized and free of distractions.
Scheduling and time management
A key responsibility for EAs is ensuring their executive’s time is put to the best use. For instance, they might rearrange meetings to create uninterrupted focus time or prioritize urgent matters that need immediate attention.
Communication and correspondence
EAs often manage internal and external stakeholders on behalf of the executive. Whether it’s drafting emails, fielding calls, or organizing briefings, they ensure that important messages are delivered clearly and on time.
✨ Think of it this way: While the Chief of Staff focuses on “what’s next” for the organization, the Executive Assistant works to ensure “what’s now” runs smoothly. Together, they create a powerful support system that enables executive leaders to operate at their highest potential.
Skills and Qualifications
Essential skills for a Chief of Staff
A Chief of Staff must be a strategic thinker with strong leadership abilities.
They need to see the bigger picture, anticipate challenges, and develop plans to address them using:
- High-level problem-solving abilities
- Political savviness and exceptional stakeholder management
- Project management expertise at an enterprise level
- Strong analytical and data interpretation skills
- Leadership capabilities to influence without direct authority
- Excellent cross-functional communication
Typically, a Chief of Staff holds an MBA or relevant master’s degree, with 8-10 years of progressive business experience. Salary ranges from $160,000 to $390,000 annually in the U.S., with additional bonuses at senior levels.
Essential skills for an Executive Assistant
As the gatekeeper to their executive, an EA must have outstanding organizational and interpersonal skills to handle internal and external interactions. They ensure that the right people have access to the executive at the right time.
The most successful EAs also possess:
- Exceptional time management abilities, including the capacity to multitask and prioritize
- Advanced proficiency in business communication
- Discretion and judgment in handling confidential information
- Attention to detail
- Proficiency in modern productivity tools and technology for EAs
Executive Assistants typically have a bachelor’s degree in business administration or related field, with 3-5 years of experience supporting senior executives. Salaries for senior executive assistants typically range from $60,000 to $110,000 in the U.S., depending on location and experience level.
Day-to-Day Operations
Ever wondered what really happens behind the scenes when executives seem to be everywhere at once, making decisions and driving initiatives forward?
Let’s pull back the curtain on a typical day for both roles at —you might be surprised at how different they look!
A day in the life of a Chief of Staff
A typical day for a Chief of Staff can vary greatly.
Take Arjun Nasker, Chief of Staff to the COO at , for instance.
He prefers to start his workday by checking his messages and reviewing the status of ongoing projects. He reserves mid-mornings for deep work that requires strategic thinking or analytics. Meetings and team check-ins happen around midday, while afternoons are usually dedicated to 1:1s. His day ends with him reviewing and clearing out his notifications.
For Mandy Mekhail, Chief of Staff for the People function at , this looks a little different.
- Morning (08:00-10:00): Review emails and messages to prioritize tasks. Check for any updates on ongoing projects and tasks. Set the agenda for the day and prepare for any meetings
- Mid-morning (10:00-12:00): Meetings with the executive team and department heads. Discuss strategic initiatives, address any roadblocks, and align on priorities
- Afternoon (13:00-15:00): Project management and execution—coordinating with various teams, ensuring projects are on track, and using ’s task management features to update statuses and deadlines
- Late afternoon (15:00-17:00): Strategic planning and analysis, review reports, analyze data, and use ’s Dashboards to visualize key metrics and performance indicators
- Evening (17:00-18:00): Review the day’s accomplishments and plan for the next day. Ensure that all tasks and projects in are updated and any pending items are noted for follow-up.
She goes on to clarify:
A day in the life of an Executive Assistant
The EA’s morning often begins early to prepare for the day. They review urgent emails and organize the executive’s schedule while making room for managing impromptu meeting requests and reorganizing commitments to accommodate last-minute changes.
They may coordinate event arrangements, travel itineraries, budgets, and expenses while simultaneously managing incoming communications throughout the day.
Faye shares a summary of her many responsibilities as EA at .
Morning routine:
- Check emails and calendar:
- Review the inbox for urgent messages
- Update the executive’s calendar with any new appointments or meetings
- Send out reminders for the day’s meetings to all participants
- Prepare the daily brief:
- Compile a list of key points for the executive’s attention, including schedule highlights, important emails, and pending deadlines
- Meeting preparation:
- Confirm meeting rooms are booked and set up for the day’s meetings
- Ensure all necessary materials and equipment are prepared
Throughout the day:
- Communication management:
- Screen phone calls and take messages
- Manage correspondence, draft emails, and letters on behalf of the executive
- Schedule management:
- Document handling:
- Prepare and edit documents, reports, and presentations
- Organize and maintain files and records in accordance with company policy
- Project assistance:
- Assist with project management tasks as assigned
- Follow up on project timelines and communicate updates to the executive
Afternoon routine
- Lunch arrangements
- Coordinate lunch meetings or order lunch for the executive as required
- Expense reports
- Track and reconcile expenses, submit reports for approval
- Event planning (if needed or within a specific period)
- Assist with planning corporate events, engagements, or conferences
- Internal liaison
- Act as a point of contact between the executive and other staff members
- Relay directives, instructions, and assignments from the executive
End of day
- End-of-day wrap-up
- Review the day’s accomplishments and unfinished tasks
- Prepare a brief for the next day’s agenda
- Final email check
- Ensure all critical emails have been addressed
- Flag important items for the next day
- Prepare the executive for the next day
- Discuss the next day’s schedule and any preparation needed
- Provide any materials or documents for review
The use of technology in both roles
Both the CoS and EA rely heavily on technology to streamline their day-to-day operations, and this is where productivity and project management tools like come into play.
offers a centralized platform to manage executive calendars, track key deliverables across projects and functions, and automate repetitive administrative tasks.
Task management with
Chiefs of Staff frequently manage complex, multi-team projects.
Using ’s Task Management features, they can assign tasks, set due dates, and track progress across departments.
For instance, when coordinating a company-wide initiative like a strategic overhaul, the CoS can use to break down the project into actionable tasks and subtasks and ensure each team delivers on its goals.
Scheduling with ’s Calendar and Gantt Chart Views
Scheduling is a crucial part of an EA’s role, and ’s Calendar View and Gantt Chart View provide a bird’s-eye view of meetings, project deadlines, and executive commitments.
With the added advantage of customizable templates, like ’s Schedule Blocking Template, EAs can plan their executives’ days more efficiently.
This template helps them allocate specific periods for meetings, deep work, and breaks, ensuring priorities are met, and downtime is built in. By visually mapping out each block, and tracking completion using Custom Task Statuses in , assistants can:
- Better balance the executive’s workload
- Minimize interruptions
- Create a more structured, productive day tailored to their goals and energy levels
Communication with Docs and Chat
Both roles thrive on smooth communication.
Mandy swears by ’s Docs feature to take notes and track action items during her meetings with executive teams.
And Arjun relies significantly on Chat. Chat brings work and conversations together on one platform, eliminating the toggle tax of switching between multiple tools to get things done.
’s Assigned Comments and @mention features further allow the CoS and EA to provide real-time updates to their teams and executives right within threaded discussions inside a Task—keeping all context centralized.
Whether it’s tagging the head of marketing on a project update or flagging an urgent customer grievance for the CEO, these features make sure nothing falls through the cracks.
Knowledge management with Brain and Connected Search
Brain is ’s native AI assistant that understands natural language questions about your content, generates standup reports, and helps summarize and analyze workspace data. CoS and EAs can use it to ask questions conversationally and get relevant answers instantly.
’s Connected Search provides unified search, allowing teams to find information across tasks, docs, comments, and attachments within and across connected external apps like Google Drive, Slack, and more.
Together, these tools help EAs and CoS quickly locate relevant information and maintain better organizational knowledge.
Career Path and Advancement
The career trajectories for Chiefs of Staff and Executive Assistants offer fascinating paths to leadership and specialization. You’d be surprised at how these roles can evolve and intersect.
Chief of Staff career progression
McKinsey’s analysis of publicly available data on 250 Chiefs of Staff revealed that two-thirds were promoted, while 18% used their experience to make a lateral move.
Most Chiefs of Staff typically stay in the CoS role for a median duration of 2.3 years, using it as a springboard into executive positions such as the COO, CFO, and CEO.
Many CoS may also start their own companies, armed with invaluable insights into executive leadership.
Executive Assistant career evolution
Modern EAs are breaking the traditional mold, creating diverse career paths based on their comprehensive business understanding. Possible trajectories include:
- Junior EA → Senior EA → Executive Business Partner → Operations Director
- Specialization tracks: Chief of Staff, Project Management, or Operations Leadership
- Many become highly sought-after EA consultants or trainers
Unlocking and tracking career growth with
Modern career development requires modern tools. Here’s how professionals in both roles use to advance:
- Create personal development dashboards tracking key projects and wins
- Use Docs to maintain a dynamic portfolio of achievements
- Set and monitor career milestones with the Goals feature or use customizable templates like the Career Development Goal Setting Template, ideal for laying out a roadmap for promotions, skill-building, or role-specific achievements
The key to advancement in either role is continuous learning, strategic thinking, and clear documentation of your impact. With the right mindset and tools, both paths offer remarkable opportunities for growth.
Case Study: Bridging the Gap—EA to Chief of Staff
The transition from EA to Chief of Staff is becoming increasingly common, especially in tech companies.
Why? EAs possess invaluable institutional knowledge and relationships that make them uniquely qualified for strategic roles.
Ann Hiatt’s journey from an Executive Assistant at Amazon to the Chief of Staff at Google ✈️
Graduating from the University of Washington in 2002 with dual degrees in International Studies and Scandinavian Studies, Hiatt secured a position as CEO Jeff Bezos’ Executive Business Partner at Amazon after a grueling nine-month interview process in the post-dot-com crash era.
At Amazon, she excelled in managing logistics, coordinating cross-functional teams, and preparing public communications while gaining invaluable insights into Bezos’ leadership style and operational strategies. These insights would prove invaluable in her future roles.
After three years at Amazon, Hiatt transitioned to Google, where she initially worked under Marissa Mayer. Her role involved managing product launch cycles and supporting an internationally distributed team. Her performance caught the attention of Eric Schmidt, Google’s then CEO, who recruited her as Chief of Staff.
As Google’s first-ever Chief of Staff, she invented the role’s framework, which has since become a gold standard across various industries. She managed Schmidt’s internal and external communications, strategic planning, and public policy initiatives. Her innovative approach operationalized “moonshot thinking” and established new standards for executive support roles within tech companies.
After leaving Google in 2018, Hiatt continues influencing the tech landscape through her bestselling book, Bet On Yourself, sharing insights from her experiences with Bezos and Schmidt. She now consults with CEOs globally on leadership challenges and innovation strategies, championing ambitious career trajectories.
The Impact of CoS and EAs on Organizational Success
When executives achieve remarkable results, it’s often the seamless support of their Chief of Staff and Executive Assistant working in concert that makes it possible. Let’s explore how these roles drive organizational excellence.
The strategic impact of the Chief of Staff
The Chief of Staff operates as the CEO‘s (or other C-suite executives’) strategic force multiplier. As a trusted proxy, they:
- Orchestrate complex policy implementation across business units
- Create feedback loops to measure policy effectiveness and drive iterations
- Act as an early warning system for friction points
- Decode cultural nuances and unwritten power dynamics
- Broker solutions to sensitive cross-functional challenges before they escalate
- Shield the executive from unnecessary political turbulence while surfacing critical issues
The most effective Chiefs of Staff understand their power flows from amplifying their principal’s impact.
Operational excellence through Executive Assistants
Executive Assistants contribute directly to the bottom line by saving executives at least eight hours weekly, translating to 46 days in recovered executive time per annum.
They function as a mission-critical operational nerve center, amplifying leadership effectiveness. They:
- Transform chaotic demands into structured priorities
- Architect and defend leadership focus for maximum organizational impact
- Filter information intelligently to help their executives make better decisions
- Ensure high-stakes deliverables move with precision and purpose
- Function as a sophisticated communication hub, triaging and routing critical information
- Maintain organizational memory and context across projects and initiatives
- Navigate delicate interpersonal dynamics with diplomacy and discretion
Leveraging for maximum impact
Modern Chiefs of Staff and Executive Assistants rely on ’s Dashboards and Goals features to drive enhanced team collaboration and strategic alignment.
The customizable dashboards serve as command centers where they can monitor multiple workstreams, team priorities, and executive initiatives in real time. By consolidating strategic and operational metrics, project statuses, and team activities in one visual interface, they maintain a comprehensive overview of organizational progress.
Similarly, Goals enable them to break down high-level objectives into measurable targets and trackable milestones. This lets them effectively cascade executive priorities throughout the organization while maintaining clear visibility of progress. They can quickly identify bottlenecks, reallocate resources, and ensure teams stay focused on strategic priorities.
The best part? With shared dashboards, teams gain transparency into interdependencies and deadlines, while automated progress tracking reduces the need for status update meetings, enabling more efficient collaboration across departments. This makes collaboration feel more natural and less like a chore.
Challenges and Solutions
Even the most seasoned professionals in these roles face unique obstacles.
Let’s explore what they are and how to overcome them, armed with tips from EAs and CoS at .
Challenges and solutions for Chiefs of Staff
Navigating authority without direct reports
One of the biggest headaches for a chief of Staff? They often need to get things done across different departments without having any direct authority.
As Arjun puts it from his experience:
That’s where having a visual collaboration tool makes all the difference. Using ’s Whiteboards and Docs for strategy sessions helps get everyone’s buy-in and ensures they’re on the same page.
Managing competing priorities
As CoS, you’ve got long-term strategic projects competing with those “need-it-yesterday” executive requests.
The solution? Implementing clear prioritization systems. Not everything important needs attention right away. And not everything that needs attention right away may be important enough.
Use ’s Task Priorities to flag urgent, high, normal, and low-priority items so everyone knows exactly what to tackle first.
Managing people and implementing change
The people side of things is another interesting challenge.
Arjun adds:
Challenges and solutions for Executive Assistants
Information overload
For Executive Assistants, information overload is real! Imagine trying to manage an endless stream of emails, requests, and calendar invites every single day.
Emmanuel shares a practical perspective on using Automations to handle busy work. You can use if-then conditions to trigger specific actions (e.g., if task status changes to ‘done,’ change task assignee to ‘Klara’) or build custom automation sequences using natural language commands via Brain!
Maintaining work-life boundaries
The “always-on” nature of EA roles can be particularly demanding. To achieve a better work-life balance, set up clear systems and delegation protocols in Docs that keep everything documented and organized.
Think:
- Response templates or AI responses for common requests
- Standardized processes for urgent matters
- Clear escalation procedures
Effective communication across teams
Faye admits ensuring that messages, updates, and instructions are accurately communicated across departments can be challenging, especially with busy schedules.
Her suggestion?
Emmanuel adds:
Choosing the Right Fit
The distinction between Chief of Staff and Executive Assistant roles isn’t just about titles—it’s about how each position uniquely contributes to organizational excellence.
Choosing between these roles depends on your organization’s specific needs:
- For larger organizations (like ours), both roles working in tandem often provide the optimal support structure
- Need strategic support and cross-departmental coordination? A Chief of Staff might be your answer
- Looking for operational excellence and seamless daily execution? An Executive Assistant could be ideal
The right technology can amplify the impact of these crucial roles, from automating routine tasks to tracking strategic initiatives. ’s comprehensive suite of features supports strategic planning and daily operations, making it an ideal platform for Chiefs of Staff and Executive Assistants.
Why wait till you hire your best fit? Try today and plan ahead for success!
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