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Are you paying a hidden workforce premium?

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Author: Hays Talent Solutions | Updated: March 2026
 
Statement of Work (SoW) spend is exploding. Analysts are reporting sustained double-digit growth globally, with close to two-fifths of non-permanent labour now delivered through SoW engagements.
 
And momentum is only accelerating.
 
Eighty per cent of HR and procurement leaders plan to increase their use of contingent talent over the next two years, with 64% specifically expanding SoW and contractor-led delivery models.
 
But as organisations double down on external delivery, visibility is moving in the opposite direction. When the work is critical, but the workers remain unseen – we see costs compound. This is the ‘hidden workforce premium’ - the excess financial, compliance and operational risk an organisation absorbs when it cannot clearly identify or govern the people performing work across its external labour supply.
 
How certain are you that you’re not already paying it?
 
This blog explores:
 
  • What the ‘hidden workforce premium’ is and why it matters now.
  • The practical steps organisations can take to regain visibility of their external labour force.
  • How tools such as the Tech Talent Explorer can provide an essential intelligence layer, helping to benchmark value globally.

 

The Statement of Work boom and the blind spots it creates

It's likely that you're relying more heavily than ever on non‑permanent talent, including outsourced delivery models and increasingly complex SoW agreements. Today, the external workforce sits at the centre of technology-driven transformation and operational continuity.
 
The scale is significant. The share of contingent spend allocated to SoW has more than doubled in recent years, rising from around 18% in 2017 to nearly 40% in 2024, with analysts forecasting 20%+ CAGR through 2028. And even as temporary hiring slowed in recent years, SoW spend continued to surge, becoming the default mechanism for delivering projects when internal headcount is constrained.
 
As Dan Craddock, Solutions Director Hays UK&I explains: “When managers are under pressure to deliver but are constrained by internal bureaucracy, they naturally look for alternative routes keep critical work moving, even if this comes with higher costs or compliance risks.”
 
Using SoW deliberately can be powerful, but when work is pushed into these channels to bypass hiring freezes or avoid process friction, it often sidesteps governance, inflates spend and obscures who is actually doing the work. The tension mounts as more critical work, and more organisational risk, ends up in a part of the workforce leaders can’t see, can’t benchmark – and crucially, can’t control.
 
And the fallout is real.
 
Imagine reporting a 10% saving on a major technology-enabled SoW, only to face the board months later.
 
You’re being asked to explain extensive fines for breaches linked to an offshore subcontractor that nobody realised had access to your network, or facing backdated tax liability from a SoW‑in‑name‑only engagement that was, in practice, a misclassified employee.
 
The contract was optimised. But the workforce behind it remained invisible. This is the hidden workforce premium in action - and it’s becoming more common as organisations chase delivery speed at the expense of visibility.
 

Why is the hidden workforce becoming a C-Suite concern?

Three global forces are converging: regulatory shifts, fragmented infrastructure and evolving definitions of ‘value’. Together, they are bringing the hidden workforce to the surface, pushing it from a procurement-focused operational issue to a board-level strategic concern.
 

1. Regulatory pressure is escalating

Regulators are signalling a clear and unified message: Organisations are responsible for people doing work for them, regardless of how they are engaged.
 
Across markets, legislators are tightening expectations around:
 
  • Worker status and classification.
  • Payroll accuracy and tax integrity.
  • Right‑to‑work verification.
  • Subcontractor transparency.
  • Risk ownership across labour supply chains.
 
Examples include:
 
  • The EU Platform Work Directive implementation deadline looms for member states (2nd December 2026) creating a ‘presumption of employment’ if a platform exercises direction and control over a worker.
  • The US Department of Labor proposed new legislation in March 2026 that would see updated framework implemented for determining whether a worker is an employee or an independent contractor.
  • The introduction of Joint and Several Liability in the UK, placing end-to-end responsibility of the end client, regardless of intermediaries (such as payroll, consultancy or subcontractor).
 
“For organisations, regulatory changes spell the end of the “I didn’t know” defence”, states Dan:
 
“With plausible deniability no longer viable, you need to ensure you’re taking the relevant precautions to remove ‘uninvited guests’ from the party – the sub-contracting ghosts, the misclassified workers, the mini-umbrella designed to dissolve before audit. Now is the time to surface what has historically been hidden from view.”
 
As an organisation, you need to be able to answer some fundamental questions: who is doing the work, what skills are we actually buying – and are we doing this compliantly across jurisdictions? If you can’t answer these, the hidden workforce isn’t just present, it’s expanding unchecked.
 

2. We’re pushing the limits of workforce planning

Most organisations are building ambitious, decentralised workforce models on legacy infrastructure. HR and procurement systems were built for a world where work happened inside the organisation, not across multi‑layered ecosystems of suppliers, subcontractors and offshore teams.
 
The result is a widening gap between how work actually gets done - and the systems leaders rely on to govern and optimise it. Without clarity, the hidden workforce continues to grow.
 
Confident your workforce model is under control? Then ask yourself: how closely does this mirror your current workforce tech stack?
 
  • HRIS holds highly structured, yet largely disconnected data on permanent employees.
  • Vender Management Systems are used to manage contract workers and temporary talent but are limited to those engaged through formal channels.
  • Statement of Work providers are governed through contracts and supplier assurances, offering insights into deliverables, but not always those doing the work.
 
And despite growing reliance on this labour supply, offshored labour often sits outside of formal reporting mechanisms.
 
Put simply: without a unified way to track and compare roles, skills and rates across labour types, organisations cannot govern value or risk. Leaders are modelling with the half they can see, while the hidden workforce grows in the blind spots their systems can’t reach.
 

3. Artificial Intelligence is exposing outdated pricing models

For decades, external labour pricing has anchored on a simple equation: Hours x Rate = Cost.
 
But AI is dismantling this logic, widening the gap between how work is priced – and how it’s produced. As David Brown, CEO Hays Americas summarises: “If 100 hours of work can now be delivered through 10 hours of expert guidance plus AI-enabled execution, then ‘time’ becomes an insufficient proxy for value. Inputs matter less. Results matter more.”
 
Yet many organisations continue to rely on pre‑AI pricing mechanisms, creating three key risks:
 
  • Overpaying for AI‑augmented output: When pricing is anchored to labour hours, organisations absorb inflated costs even as efficiency increases.
  • Misaligned SoW structures: Legacy SoWs reward time spent rather than outcomes delivered.
  • Inability to benchmark true market value: Technology is reshaping roles faster than traditional rate framework can accommodate, making it harder to understand the true market value of AI-enabled work.
 
Forward-looking organisations are already moving toward models that reflect value, not effort. But to do that effectively, they need global intelligence that pinpoints where AI is impacting roles and demanding new capabilities.
 
Because when value changes faster than visibility and benchmarking, the hidden premium grows - quietly but exponentially.
 

Paper savings can’t replace proper governance

Leaders often believe they’re saving money through clever contracting. But beneath the ‘paper savings’ secured, a different reality emerges. Misclassified workers, ghost subcontractors and rogue SoW agreements routinely mean organisations are paying up to 70% more than equivalent models.
 
On the page, it looks efficient. In practice, it becomes a hidden workforce premium: the accumulated financial, compliance and capability risk created when organisations cannot see the workforce behind the work.
 

See the workforce behind the work with the Tech Talent Explorer

The answer to the hidden workforce premium is not to reduce your reliance on external workers. Modern organisations simply cannot operate - let alone accelerate - without flexible, specialist, non‑permanent talent.
 
Rather, the focus should be on making more of your workforce visible. Without a clear, consistent view of who is doing the work, how they’re engaged and what they cost, even well‑negotiated contracts can mask inflated spend, misaligned value and unnecessary risk.
 
Organisations need a way to connect the dots across permanent employees and contractors. This is where a global rates‑and‑roles intelligence layer becomes essential. With the Tech Talent Explorer, you can benchmark pay rates fairly, identify value leakage and understand how capability is shifting across countries and contract types.
 
Non-permanent labour will continue to grow. But the cost and risk premiums associated with it are not inevitabilities. Those who invest in intelligence will unlock stronger cost control and a more accurate understanding of their organisational capability.
 
Ready to shift from the hidden to the high potential? Speak to our team today.
 

Looking for more insights? Here's your next read: 

 

FAQs: Hidden workforce premium  

Q: How do I know if we are paying a hidden workforce premium?
 
You may be paying a hidden workforce premium if there are workers, subcontractors or offshored teams you cannot clearly identify. Warning signs include inconsistent rate cards, unexplained variation between suppliers, or SoW engagements that appear “deliverable‑based” but operate like staff‑augmentation in practice. You should also look for patterns of spend routed through SoW during hiring freezes, unusually high mark‑ups, or long chains of delivery partners. If you cannot answer with certainty who is doing the work, where they are located, how they are engaged and how their cost compares to market rates, the premium is almost certainly present.
 
Q: What data should I track to reduce hidden workforce risk?
 
To reduce hidden workforce risk, you need consistent data covering worker identity, classification, location, access level, skills, rate structures and subcontractor relationships. You should strive to maintain a single view that links permanent employees, contractors, SoW contributors and offshore teams, with clarity on their roles and cost drivers.
 
Tracking this data helps you spot patterns such as inflated costs or work being carried out by individuals outside approved delivery models. The more granular your workforce data is, the easier it becomes to enforce compliance and eliminate hidden premiums.
 
Q: Does reducing the premium mean cutting contractors?
 
No - reducing the hidden workforce premium does not mean reducing your use of contractors, specialists or SoW partners. Modern organisations depend on external talent for transformation, innovation and capacity flexibility. The goal is visibility, not contraction. By improving visibility, you can pay the right rates, use the right delivery models and reduce unnecessary layers of intermediaries.