LESSON 5 OF 6 · ADVANCED
Pair activity with quality and cost
Review downstream fit, hiring-manager evidence, candidate feedback and early experience alongside volume. Cost per start requires a defined cost scope and period. A cheaper channel is not automatically better if its candidates do not meet the role’s needs. Avoid comparing costs with different inclusions.
Define a cost scope and select one quality measure to review beside conversion.
About 2 minutes reading + 12 minutes practice. Take longer when needed.
Apply the method
Define cost scope and observation period before calculating cost per start. Decide whether the measure includes advertising, recruiter compensation, systems, agency fees and other approved categories. Use the same definitions when comparing. Pair efficiency with job-related quality, candidate experience and early support measures so the cheapest path is not automatically declared best. Distinguish correlation from causation: a channel associated with more starts may serve easier roles or receive stronger support. Use the data to investigate rather than announce an unsupported winner.
A worked application
Fictional example: Team A reports $10,000 cost and two starts, or $5,000 per start. Team B reports $4,000 and two starts but excludes payroll that A included. The rates are not directly comparable. After definitions are aligned, the leader also reviews whether the hires met the role’s evidence requirements and whether onboarding commitments were delivered.
Common mistake to avoid
A lower cost-per-start figure is not automatically better if its cost scope or the work being filled is materially different.
Work through the case
FICTIONAL SCENARIO
One team includes recruiter payroll in costs while another reports only advertising. Their cost-per-start figures cannot be fairly ranked without normalization.
Make it practical
Define a cost scope and select one quality measure to review beside conversion.
Compare your reasoning with a worked response
Document included costs and keep time windows consistent. Use a role-relevant quality measure rather than a vague satisfaction label.
Takeaway
Use the method to explain your decision, identify what you still need to verify and choose an accountable next step.
Treat the response as a model for reasoning, not the only possible wording. Adapt it to the role, evidence and appropriate organizational guidance.