What is single-thread risk?

Single-thread risk is the exposure created when exactly one person holds a workflow, relationship, or judgment call nobody else can run. If that person leaves, the capability leaves with them. The calculator prices that exposure: roles at risk, times 12-month attrition probability, times the cost of one departure.

How do you calculate the cost of a key person leaving?

Replacement cost is modeled at 100% of annual compensation (SHRM and Gartner benchmarks), plus productivity loss at 50% capacity over a 4-month transition. Annual exposure = single-threaded roles x 12-month attrition probability x per-departure cost.

Why not document the knowledge internally?

Internal builds typically take 240+ hours of senior staff time, carry roughly 70% rework overhead, and land at about 58% effectiveness. Coveo found 42% of internal knowledge artifacts fail the employees who try to use them. The labor often costs as much as the audit, and the output isn't AI-ready.

What is the Mettle Workflow Audit?

A 2-week, $75,000 audit of one team. Mettle captures how your best operators actually work, quantifies site-to-site variance, and delivers SOPs, a manager runbook, an AI-native execution map, and a board-ready findings brief against a measured baseline. 100% of the fee credits toward the 90-Day Rebuild when booked within 60 days.

Single-thread risk calculator

Your best people are the system. Find out what that costs.

One departure at $180K comp costs about $210K once you count the 4-month transition. Multiply that by every role only one person can run. Model 3 paths below: do nothing, build the playbook internally, or run a Workflow Audit.

Your situation, adjust to match

Single-threaded roles 7

People who, if they left tomorrow, would break something nobody else can fix: pricing judgment, a key vendor relationship, the exception logic on your most complex workflow.

Avg annual comp of key roles $180K

Fully loaded: salary, benefits, equity estimate.

Attrition probability (12 mo.) 35%

Post-acquisition baseline: 47% of senior management leaves within 3 years of a PE acquisition (McKinsey/PRL International).

Internal team hourly rate $150/hr

Fully loaded cost of the people who would run this project internally.

Internal project hours 240 hrs

Structured workflow capture typically runs 30-40 hrs per role plus coordination overhead. Most teams underestimate this.

Internal build vs. the audit +2%

How far past the $75,000 audit your internal build runs, in labor alone.

Path A, do nothing

Annual risk exposure

$514K

Expected financial impact over the next 12 months at your attrition probability.

Replacement cost per role: $180K
Productivity loss per departure (4-month transition at 50%): $30K
Roles at risk x attrition probability: 7 x 35%

Path B, build it internally

True internal cost

$77K

What the internal build costs after rework overhead and diverted senior time, before accounting for output quality.

Raw labor cost: $36K
Rework overhead (+70%): $25K
Opportunity cost premium (+25%): $15K

Output lands ~58% effective and isn't AI-ready. Coveo found 42% of internal knowledge artifacts fail the employees who use them.

Recommended

Path C, the Workflow Audit

2 weeks, one team, a measured baseline

$75,000

100% of the fee credits toward the 90-Day Rebuild when booked within 60 days.

Workflow Audit (2 weeks, one team): $75,000
90-Day Rebuild: Scoped post-audit
Your team's facilitation hours: ~20-30 hrs
Audit credit toward the Rebuild: 100% within 60 days

SOPs, manager runbook, AI-native execution map, board-ready findings brief.

Annual risk exposure

$514K

What single-thread risk is expected to cost you in the next 12 months.

Risk coverage multiple

6.9x

Exposure addressed per audit dollar at your current inputs.

Audit cost after credit

$0

100% of the $75,000 credits toward the 90-Day Rebuild within 60 days.

Your real numbers are better

These sliders are estimates.

Leave a work email and we'll rebuild this model with your headcount, ramp curve, and multiple, and name what a 2-week audit of one team would surface first.

Methodology & sources

Do nothing (risk exposure). Replacement cost is modeled at 100% of annual compensation (SHRM and Gartner benchmarks). Productivity loss is modeled at 50% capacity over a 4-month transition. Annual risk = roles x attrition probability x per-departure cost. Sources: McKinsey/PRL International (47% senior management turnover within 3 years of a PE acquisition), CJPI 2026 Talent Benchmark (55% unplanned CEO replacement during PE holding periods), BLS (3.9-year median tenure, lowest since 2002).

Build internally. Raw cost = estimated project hours x fully loaded hourly rate. Rework overhead (+70%) reflects the Coveo finding that 42% of internal knowledge artifacts actively fail the employees who try to use them. The opportunity cost premium (+25%) reflects senior staff time diverted from revenue-generating work. Translating tacit expertise into documentation an AI tool can execute against takes specialized capture work most internal teams don't carry: Gartner's 2026 AI Maturity Survey found 75% of low-to-medium maturity organizations restrict AI agents to single-task heuristics because that context layer was never built.

The Workflow Audit. Fixed at $75,000: 2 weeks, one team. Covers top-performer workflow capture, site-to-site gap analysis with the variance quantified, SOPs and a manager runbook, an AI-native execution map, and a board-ready findings brief against a measured baseline. 100% of the audit fee credits toward the 90-Day Rebuild when booked within 60 days. Your team's facilitation requirement is roughly 20-30 hours across subject matter experts, versus the 240+ hours a self-directed project typically takes before rework.

The exposure compounds monthly

One departure costs more than the audit that would've caught it.

We take a limited number of audits each quarter so each one gets the founding team. Map what your best operators do now, while they're still in the building.

Book a Workflow Audit Ask what an audit would surface

$75,000 / 2 weeks / one team. 100% credited toward the 90-Day Rebuild within 60 days.