Datum RPO Blog

Stop the Leak: 4 Hidden Fees Inflating Your Labour Costs

Written by Datum RPO | 11 Mar 2026

In a talent-short market, high labour costs are expected. Inflated ones are not.. But here’s the hard truth: there is a massive difference between paying for top-tier talent and paying for vendor inefficiency.

Many organisations assume their workforce budget is just "the price of doing business." Yet, when you pull back the curtain on recruitment agency spend, you’ll often find a trail of invisible fees and "ghost" costs that add zero value to your bottom line.
If your budget is creeping upward while your headcount remains flat, it’s time to stop the bleed. Here is how to reduce recruiting agency spend by identifying and eliminating the four hidden fees driving up your costs.

1. Margin Creep: The Silent Budget Killer

Every agency charges a markup, it’s how they stay in business. But “Margin Creep” is the subtle, undocumented rise in those percentages over time.

It usually starts small: an extra 2% here, a slightly higher "standard rate" there. On a single invoice, it’s a rounding error. But across a temporary workforce of hundreds, a 3% creep can quietly siphon six figures out of your annual budget. Because many invoices bundle pay rates and margins into a single "composite rate," these hikes are almost impossible to spot without a forensic audit.

  • The Fix: Demand a "Transparent Line Item" policy. If the invoice doesn't show the worker’s pay, statutory costs, and the agency’s margin separately, don’t pay it.

2. Duplicate Supplier Charges: Paying Twice for the Same Work

When you have multiple agencies competing for the same roles without a central gatekeeper, administrative blind spots lead to "Double Dipping."

  • The Candidate Dispute: Two agencies submit the same person, and you end up paying a "split fee" or a premium to resolve the conflict.

  • The Timesheet Overlap: In fragmented systems, it is alarmingly easy to pay for hours that two different suppliers have both claimed.

  • The Fix: Centralise through a Vendor Management System (VMS). A VMS creates a "digital fingerprint" for every candidate, automatically blocking duplicate submissions and unverified billing.

3. Conversion Fees: The "Ransom" on Talent

Conversion fees, the "ransom" you pay to take a temp worker permanent, are standard. But are they fair? Many contracts contain aggressive "Introduction" clauses that claim ownership of a candidate for

12+ months, even if they applied to you directly later.

  • The Fix: Negotiate a sliding scale. Ensure conversion fees decrease based on the assignment's duration. After 14 weeks, the fee should be nominal or zero. Don't pay full price for a "try before you buy" that you’ve already tested.

4. The "Admin" Fees: Compliance as a Profit Centre

Compliance is non-negotiable, but it shouldn't be a profit margin for your suppliers. Charges for background checks, digital Right-to-Work (RTW) apps, and even timesheet software access are often buried in the fine print as "processing fees."

  • The Fix: Audit your Master Service Agreements (MSAs). The agency should provide a compliant worker as part of their service, not as a paid "extra."

How Datum RPO Can Help

Stopping the leak requires more than just a sharper eye, it requires a better system. As a specialist in Neutral Vendor Managed Service (NVMS) solutions, Datum RPO acts as the impartial intermediary between your business and your recruitment supply chain.

We help you regain control by:

  • Eliminating Margin Creep: We standardise pay rates and margins across your entire supplier panel, delivering direct cost savings of 6–16%.

  • Providing Total Visibility: Our bespoke VMS technology gives you a single real-time dashboard. No more "black box" invoices; you see exactly what the worker earns vs. what the agency keeps.

  • Automating Compliance: Our platform conducts real-time audits on every worker, from RTW status to AWR tenure, protecting you from the legal risks and "junk fees" associated with manual errors.

  • Centralising Invoicing: We consolidate all agency activity into one simple electronic invoice, drastically reducing the administrative burden on your finance and HR teams