International recruitment should be assessed as a workforce decision, not only as a recruitment fee. For employers with persistent vacancies, the alternative costs may include overtime, agency cover, delayed jobs, lost workshop capacity, subcontractor premiums and pressure on existing staff.
Compare like with like
Use the same time horizon and productivity assumptions for each option. Compare the total cost of international recruitment with the realistic alternative, not with a zero-cost vacancy.
Costs to include
- Recruitment, assessment and any agency or service fees.
- Relevant sponsorship, immigration and professional support costs.
- Relocation or onboarding support provided by the employer.
- Training, certification, site induction and equipment.
- Management time and the time needed for the new employee to reach expected productivity.
Costs of the alternatives
- Overtime premiums and fatigue-related operational risk.
- Temporary agency rates and repeated recruitment costs.
- Subcontractor premiums or limited availability.
- Lost output, delayed work packages or unused workshop capacity.
- Retention and burnout costs for existing employees covering the gap.
A simple calculation framework
Estimate the monthly cost of each alternative, multiply it by the expected duration of the vacancy, then add any measurable downstream impact. Compare that figure with the total cost of the new hire over the same period. Use conservative assumptions and show the range where data is uncertain.
| Input | How to estimate it |
|---|---|
| Vacancy duration | Use actual historic time-to-fill for the role. |
| Overtime or agency cover | Use payroll and supplier invoices. |
| Lost capacity | Use realistic output or billable-hour assumptions. |
| International hire cost | Include all relevant case costs and onboarding. |
Do not overstate the return
Not every vacancy causes lost revenue, and a new employee will need time to settle in. Use evidence from your own operations where possible. Keep hard costs separate from estimates, and do not count the same benefit twice.
Eligibility and risk still matter
A positive financial model does not establish that a role is eligible for sponsorship. Confirm the immigration route, duties, salary and employer requirements before deciding to recruit internationally.
A practical framework for calculating recruitment ROI
Start by defining the business problem in operational terms. A transport operator may need drivers to protect service coverage; a construction contractor may need welders or fitters to deliver a work package; a dealership may need technicians to restore workshop capacity. The financial model should connect the vacancy to a measurable cost or constraint instead of assuming every empty role creates the same loss.
Next, compare the realistic alternatives over the same time period: continue recruiting locally, train existing staff, use agency labour, subcontract, pay overtime or recruit internationally where the role is eligible. Record direct costs separately from estimates of lost capacity or delayed work. This makes the decision transparent and allows finance to challenge assumptions.
Use a conservative, base and upside scenario
Build at least three scenarios. In the conservative case, allow for a longer recruitment process, fewer successful starters and a longer ramp-up period. The base case should use your best evidence from comparable vacancies. An upside case can show the benefit if hiring and onboarding proceed smoothly, but it should not be the only case used to approve the investment.
Useful inputs include average vacancy duration, overtime hours, agency invoices, subcontractor rates, expected productive hours, candidate pass rates, offer acceptance and early attrition. Use data from your own operation wherever possible. If a number is an assumption rather than a measured result, label it clearly.
Measure time to productivity, not just time to hire
A new hire may not reach expected output immediately. Include induction, site training, technical familiarisation, supervision and any required local certification in the model. For a vehicle technician, productivity might be tracked through billed hours and repair quality; for a construction role, it might be safe completion of assigned work and delivery against the programme. Choose a measure that reflects the real job.
Questions finance and operations should ask
What is the cost of leaving the vacancy open?
Use actual overtime, supplier and productivity data, then estimate the duration of the gap. Avoid double-counting lost output and revenue impacts that describe the same effect.
Does a positive ROI mean the role can be sponsored?
No. The commercial case and immigration eligibility are separate decisions. Confirm the route, occupation, salary and sponsor requirements before proceeding.
Present the business case to leadership
A useful business case should fit on a clear summary page and link to the assumptions behind it. Show the cost of the vacancy today, the realistic alternatives, the total estimated cost of international recruitment, the time to productivity and the main uncertainties. State what would change the recommendation, such as an ineligible occupation, an unexpected delay or a different number of successful hires.
After the hire starts, compare the forecast with actual results. Did the worker reach expected productivity? Did overtime or agency use fall? Was the role retained? This closes the loop and gives future workforce decisions a stronger evidence base than an ROI calculation that is never revisited.
Assess your workforce gap
Recruitroo helps employers evaluate international recruitment options and coordinate eligible hiring cases.