Why Rogue Spend Matters in Recruitment

Estimates from procurement consultancies suggest that between 20% and 40% of contingent workforce spend in large organisations flows outside the approved vendor management system at any given time. For a company spending £5 million annually on contingent labour through approved channels, that could mean £1 to £2 million more being spent through unapproved routes: direct hiring manager relationships with agencies not on the preferred supplier list, informal arrangements with individual contractors, and shadow spend that never reaches finance for proper categorisation. Rogue spend, sometimes called maverick spend or off-contract spend, is procurement terminology for purchasing that bypasses established procurement controls.

For staffing agencies, rogue spend is both a risk and a sales channel depending on which side of the fence they sit on. Preferred suppliers lose revenue to rogue arrangements with competitors. Agencies operating outside formal programmes benefit from rogue spend in the short term but often lose those clients when procurement tightens its controls and removes any non-PSL supplier from future consideration, sometimes permanently.

How Rogue Spend Works

Rogue spend in contingent labour typically begins with a hiring manager who has an urgent need and does not want to navigate procurement approval timelines. They call an agency they have used before, the agency fills the role, an invoice arrives, and finance processes it because the work was done and the invoice is legitimate. The VMS or MSP programme, if one exists, never sees the engagement. The company has now paid a markup to an agency outside its negotiated rate card, potentially hired someone who has not cleared the client's background check requirements, and created a worker who may not be covered under the correct insurance or contractual arrangements.

For the agency on the receiving end of a rogue order, the short-term economics look attractive: they fill a position and earn a fee without competing on the PSL or meeting the programme's compliance requirements. The medium-term risk is a supplier audit. Many large clients now conduct annual reviews of all contractor invoices and cross-reference them against their VMS data. Agencies found operating outside the approved programme may be removed from future PSL consideration and, in some cases, required to repay the margin on non-compliant placements.

For agencies on the approved list, rogue spend by hiring managers represents direct revenue loss and a dilution of the programme's ability to deliver the cost and quality outcomes it was designed for. The countermeasure is relationship management: keeping the agency's name and capabilities visible to hiring managers so that when they have an urgent need, the preferred supplier is the first call rather than an afterthought. MSP programmes attempt to solve rogue spend systematically by routing all requests through a single platform, but they cannot prevent hiring managers from hiring temporary workers informally and submitting backdated requests after the fact.

Rogue Spend vs. Off-Contract Spend

The terms are used interchangeably in most procurement contexts, though some organisations distinguish between spend that is deliberately outside policy (rogue) and spend that is outside contract because no contract existed for that category (off-contract). The distinction matters when diagnosing root cause: deliberate rogue spend requires a cultural and governance fix, while off-contract spend may simply indicate an unmanaged category that needs a new preferred supplier arrangement added to the programme.

Rogue Spend in Practice

A global logistics company's procurement team conducts a contingent labour audit and discovers £340,000 in agency invoices over 12 months from four agencies not on the approved PSL. Three were engaged directly by regional operations managers who found the procurement process too slow for warehouse ramp-up requirements. The fourth was a specialist HGV driver agency that the preferred suppliers could not source from. The audit produces two specific fixes: a revised 24-hour SLA for urgent requests through the VMS, and a pilot appointment of the HGV specialist to the approved list. Both changes were identified only because the rogue spend data was captured and reviewed.