How to Measure Executive Assistant Performance
How to measure executive assistant performance using the right indicators
Measuring executive assistant performance is harder than measuring output in most roles. The work is largely invisible when it runs well. A blocked calendar slot prevented, an error caught before it reached the CEO, a stakeholder managed without escalation. These are the outcomes that matter, and none of them show up in a task count.
The right measurement framework focuses on outcomes and relationship quality rather than activity volume. It gives the EA a clear picture of where they are performing well and where improvement is needed, without reducing a complex role to a checklist.
Start with the responsibilities that were defined at onboarding
Performance can only be measured against a defined scope. If the onboarding process included a written list of owned responsibilities and decision authority, that document is the baseline for the performance conversation. If it did not, the first step in building a performance framework is creating that document now.
Map the EA's responsibilities into three categories: tasks with clear quality standards, tasks requiring judgment, and relationship management functions. Each category needs different measurement approaches.
The how-to-work-with-executive-assistant resource covers the baseline structure for an effective EA working relationship, which anchors the performance framework.
Measure accuracy and timeliness on structured tasks
Structured tasks such as scheduling, travel bookings, expense management, and meeting preparation have measurable accuracy standards. For each category, establish what correct looks like: meeting invites sent with the right participants and agenda in advance, travel itineraries with no missing segments, expense submissions filed within the agreed cycle.
Track errors by category over time. A pattern of errors in a specific area often reflects a missing standard or an unclear expectation rather than a capability gap. Before treating a repeated error as a performance issue, confirm that the expected standard was communicated explicitly.
Timeliness matters alongside accuracy. A correct output delivered after the window of usefulness is not a correct output. Agree on turnaround expectations by task type and track adherence to those expectations as part of the performance picture.
Evaluate judgment on tasks with ambiguity
The highest-value EA work involves judgment calls where there is no single correct answer. How to respond to a borderline meeting request. Whether to surface a stakeholder message immediately or hold it for the morning briefing. How to draft a reply on the CEO's behalf that captures the right tone for that relationship.
These decisions cannot be measured in a spreadsheet. They are evaluated through pattern observation and direct feedback. After judgment calls with significant impact, note the outcome and whether it aligned with what you would have decided yourself. Discuss these scenarios explicitly in regular check-ins rather than saving all feedback for quarterly reviews.
The standard for judgment is whether the EA's decisions reduce the CEO's decision load without creating problems that require correction. An EA who exercises good judgment consistently is worth far more than one who executes structured tasks accurately but escalates every ambiguous situation. The how to set expectations with executive assistant framework provides the communication structure for calibrating judgment over time.
Assess relationship management by stakeholder feedback
The EA interacts with stakeholders, vendors, board members, and internal team members on behalf of the CEO. The quality of those interactions reflects on the CEO and on the organization. Stakeholder feedback is a meaningful signal.
Gather feedback informally rather than through formal surveys. After significant interactions, ask the relevant stakeholder or team member whether the EA's communication and follow-through met expectations. Track patterns in that feedback over time.
The Society for Human Resource Management publishes frameworks for 360-degree feedback processes that can be adapted for the EA role in organizations where that approach fits the culture.
Conduct performance reviews on a regular cadence
A quarterly review cadence works better than annual reviews for the EA role because the scope of the role evolves quickly as the relationship matures. A quarterly conversation allows for course correction before small misalignments compound.
Structure the conversation around three questions: what is working well and should be reinforced, what is not working and needs to change, and what scope or responsibility should shift in the next quarter. Give specific examples for each point. Vague feedback such as "communication could be better" gives the EA nothing to act on.
Close each review with agreed adjustments documented in writing and shared with the EA. The documentation creates accountability in both directions and gives the next review a clear baseline.
Frequently asked questions
What are the most important KPIs for an executive assistant?
The most useful indicators are task accuracy rate, timeliness against agreed standards, judgment quality on ambiguous decisions, and stakeholder relationship feedback. Activity volume, hours logged, and number of tasks completed are less useful because they measure effort rather than outcomes.
How often should executive assistant performance be reviewed?
Quarterly reviews work better than annual reviews for most EA relationships because the role scope evolves quickly. Add brief monthly check-ins focused on current priorities and any immediate feedback, separate from the formal quarterly review.
What should be covered in an executive assistant performance review?
Cover what is working well, specific areas where expectations were not met with concrete examples, any scope adjustments for the next quarter, and any professional development the EA needs to support expanding responsibilities.
How do you give feedback to an executive assistant on judgment calls?
Be specific about the situation, the decision made, what you would have preferred, and why. Frame the feedback around the decision criteria rather than the outcome alone. Good judgment is a trainable skill when the CEO communicates preferences consistently.
What if an executive assistant's performance does not improve after feedback?
Confirm that the expectation was communicated clearly and that the EA had the tools and authority needed to meet it. If both conditions were met and performance remains below standard after specific feedback and a defined improvement period, contact the provider for a replacement assessment.