Reference Document

How the Communication Cost Calculator gets to its number

For finance leaders, the math behind the calculator is only useful if it holds up to scrutiny. This is the research base, the assumptions, and the path to verify each input. If you want to challenge any number, this document tells you exactly where to look.

The calculator estimates the cost of communication breakdown inside an organization. It then applies a recovery percentage to estimate what is reasonably recoverable through a structured communication intervention. Two numbers, two sets of sources.

The math in one paragraph

Annual communication cost equals affected headcount, multiplied by fully-loaded hourly cost, multiplied by hours per week spent on communication-related work, multiplied by the percentage of that time considered recoverable. The recoverable percentage is a slider with three benchmarks (30, 50, 70 percent) anchored to published research. The expected recovery from a structured intervention is then a fraction of that recoverable pool, set at 15 percent based on the Phillips ROI Methodology benchmark for behavioural-change interventions in leadership development.

The four sources

Source 1 of 4

Mankins, M. (2014). Your Scarcest Resource. Harvard Business Review, May 2014.

A Bain & Company study of how organizations spend their most valuable resource: leadership time. Mankins and his team analyzed weekly executive committee meetings at large companies and found that significant portions of the meeting time were viewed as ineffective by attendees, that calendar overhead in coordination, prep, and follow-up was substantial, and that organizations were treating time as if it were free even though it carried a quantifiable cost.

How this maps to the calculator The "Moderate" recovery setting (50 percent) sits at the midpoint of Mankins' findings. It assumes that roughly half of communication-related time inside a typical organization is structurally recoverable through better framing, structure, and decision discipline.

Verify: Harvard Business Review, May 2014 issue. Searchable at hbr.org under "Your Scarcest Resource" or by author Michael Mankins. Available through any HBR subscription or institutional library.

Source 2 of 4

Atlassian. State of Teams Report (most recent edition).

Atlassian's annual research into how knowledge workers spend their time, with particular focus on collaboration overhead, meeting load, and the gap between effort and decision output. The report consistently documents that a meaningful share of knowledge-work time is consumed by collaboration activity that produces low or zero decision output.

How this maps to the calculator The "Conservative" recovery setting (30 percent) is anchored to the floor of Atlassian's findings. It assumes that even in a relatively well-run organization, at least 30 percent of communication-related time is recoverable through better structure and clarity.

Verify: atlassian.com/state-of-teams. The most recent edition is published annually. The methodology page inside the report documents the survey base, sample size, and definitions used.

Source 3 of 4

Microsoft. Work Trend Index, 2023 Annual Report.

Microsoft's research drawing on telemetry from Microsoft 365 plus a survey of more than 30,000 workers across 31 countries. The 2023 report quantified collaboration time, meeting fragmentation, and the cost of "always-on" coordination. Among other findings, the report documented that workers were experiencing significant time loss to meeting overhead and unclear communication, with senior leaders reporting they could not get back to deep work between coordination touchpoints.

How this maps to the calculator Used as supporting evidence that the cost of communication breakdown is real, measurable, and large enough to warrant a structured intervention. It does not anchor a specific recovery percentage; it confirms the underlying premise that the calculator quantifies.

Verify: microsoft.com/en-us/worklab/work-trend-index. The 2023 edition is searchable by year. Methodology, sample size, and country breakdown are published with the report.

Source 4 of 4

Phillips, J. and Phillips, P. ROI Methodology. ROI Institute.

The Phillips ROI Methodology is a five-level framework for measuring the return on investment of training and behavioural-change interventions, validated across more than 25 years of meta-analysis and over 5,000 case studies. It is the most widely cited methodology for L&D ROI in enterprise environments and is used by finance teams, HR leaders, and consultants to defend behavioural-change investments to executive committees.

How this maps to the calculator The 15 percent recovery rate applied to the recoverable pool reflects the conservative end of behavioural-change outcomes documented across Phillips' meta-analysis for leadership-development interventions. It is deliberately set low to keep the calculator's projected recovery defensible. Real engagement outcomes typically exceed this figure when execution is disciplined.

Verify: roiinstitute.net. The ROI Methodology is documented in multiple published books by Jack and Patti Phillips, including "The Value of Learning" and "Measuring ROI in Learning and Development." Available through any business library.

Assumptions a CFO should know about

Affected headcount. The calculator asks for the population whose decisions or output materially depend on internal communication quality. Not the full org. Typically a subset of leaders, sales, or cross-functional teams.
Fully-loaded hourly cost. Salary plus benefits plus overhead, divided by working hours. The calculator does not assume a number; it uses what you input.
Hours per week. Communication-related work, not all work. Includes meetings, prep, follow-up, decision rework caused by unclear messaging, and the time cost of stalled approvals. The calculator does not assume a number; it uses what you input.
Recoverable percentage. User-selected slider with the three benchmarks documented above. Conservative 30 percent, Moderate 50 percent, Aggressive 70 percent. Set what you can defend.
Recovery rate. 15 percent applied to the recoverable pool. Sourced from Phillips. Held constant; not user-adjustable.
What the number is not. Not a forecast. Not a guarantee. An estimate of cost-of-status-quo against which a structured intervention can be evaluated.

Where to push back. The slider is the most consequential input. Set it conservatively if the organization is already disciplined about meetings and decision-making. Set it higher if breakdowns are observable and frequent (deals stalling, approvals taking weeks, repeat meetings to relitigate decisions, leadership saying "let me think about it" more than once on the same proposal). The recovery rate is held constant on purpose; it is set at the conservative end of the published Phillips data, so the projected recovery is unlikely to be overstated.

One question this document is built to answer

"Where does the recovery percentage come from?" From the four sources above. The slider lets you pick the benchmark that matches your environment. The 15 percent recovery is held to the conservative end of the published research base. The remaining inputs (headcount, cost, hours) come from you.