Building the Business Case: How Leaders Justify an Executive Support Hire

 

A good idea does not sell itself internally. Even executives with full authority to make a hire without anyone’s approval still need a version of this argument, if only to convince themselves the spend is justified rather than a comfort purchase. The strongest version of that argument does not start with what the executive wants. It starts with what the alternative actually costs.

The Cost of the Status Quo

Most business cases for a new hire focus entirely on the cost of the hire itself. The stronger version compares that cost against the cost of continuing without it, and the data on that side of the comparison is larger than most executives expect.

SHRM’s benchmarking research puts the average cost per hire at roughly $4,683 for direct recruiting expenses alone, before accounting for lost productivity during a vacancy or ramp-up time for a replacement. For executive-level roles specifically, SHRM’s data shows cost-per-hire averaging $35,879, with total replacement costs, once lost productivity and institutional knowledge are factored in, running toward the higher end of SHRM’s broader benchmark of 50 to 200 percent of the role’s annual salary.

Gallup’s research estimates that voluntary employee departures cost U.S. businesses roughly $1 trillion a year in total, with individual replacement costs running between half and twice the departing employee’s annual salary. The Work Institute’s 2025 Retention Report found that 75 percent of voluntary exits are preventable, meaning most of that trillion-dollar figure reflects problems organizations could have addressed before losing the person.

Where This Connects to Executive Support

That turnover data might look unrelated to a support hire at first glance, but the connection runs directly through executive bandwidth. Overloaded executives make worse hiring decisions, provide less onboarding attention to new employees, and have less time for the one-on-one engagement that retention research consistently links to lower turnover. An executive spending 25 to 30 percent of their week on administrative tasks, the figure McKinsey’s research on executive time use puts forward, has that much less time for the retention-driving work: mentoring, recognition, clear communication about direction and expectations.

Framed this way, a support hire is not competing against the company’s turnover budget. It is a lever that reduces it by freeing up the executive attention that retention research shows actually prevents the preventable 75 percent of exits.

Building the Case Step by Step

A business case that survives scrutiny needs three components, laid out plainly rather than buried in a narrative pitch. First, the current cost of the status quo: how many hours a week the executive spends on delegable work, valued at the executive’s actual compensation rate, not a rounded estimate. Second, the downstream cost of that misallocation: slower hiring decisions, delayed strategic initiatives, and the turnover risk that comes from an executive too stretched to invest in their team. Third, the specific cost of the proposed hire, compared directly against the first two numbers rather than presented in isolation.

A Realistic Example

Consider a founder preparing to bring this case to a co-founder or board member who controls budget approval. Presenting the request as “I need help, I’m overwhelmed” rarely moves a skeptical stakeholder. Presenting it as “I’m spending roughly $120,000 a year in opportunity cost on tasks a support role would cost a fraction of that to handle, and our turnover data shows preventable departures costing us more than that already” reframes the same request as a financial decision rather than a personal comfort request. The second version gets approved far more often, because it answers the question every budget approver actually asks: what does this cost us to not do?

The Number That Finishes the Argument

Every business case eventually needs a real figure to compare against, not just the cost of inaction but the actual price of the proposed solution. Rough estimates weaken a business case faster than almost anything else, because they invite the exact pushback the case is trying to avoid. The detailed cost breakdown from Executive Assistants gives the specific cost breakdown worth bringing into that conversation, turning the opportunity cost and turnover argument into a complete, defensible proposal.

The Bottom Line

The strongest business case for executive support does not argue that the executive deserves help. It argues that the company is already paying for the absence of that help, through opportunity cost, through turnover risk, through slower decisions, whether or not that cost appears on a line item anyone reviews. Executives who build the case around what the status quo already costs, backed by real numbers on both sides of the comparison, get better and faster buy-in than those who ask for the hire as a favor.