Not every staffing agency delivers the same results. Measuring the Key Performance Metrics (KPIs) of a staffing agency helps you not only measure their performance but also identify areas of opportunity to improve your business results. In this article we look at how a Vendor Management System can help.
Supplier performance management is the practice of measuring, analyzing, and managing the performance of the vendors you rely on, including staffing agencies. For a contingent workforce program, that means tracking whether your staffing agencies are helping you meet your workforce goals, and knowing which ones are delivering the results you need and which ones are underperforming.
Without a clear measurement process, you lose visibility into which agencies are actually delivering and hold underperforming ones accountable.
Many organizations still try to measure staffing agency performance using spreadsheets, in-house databases, or SharePoint-like sites. These manual methods make it easy to lose track of service level agreements, miss performance issues until they've already affected a client, and lose any real leverage to hold agencies accountable.
A Vendor Management System (VMS) centralizes and automates staffing agency performance tracking in one platform instead of scattering it across spreadsheets and inboxes. With a VMS in place, your organization gains:
What it measures: The number of calendar days (or hours, for high-volume roles) it takes a staffing agency to fill an open position, from the initial job posting to a worker starting.
Why it matters: The longer it takes to fill a role, the more your business goals suffer, and the higher the chance you lose top talent to a competitor.
How to use it: Set a target time-to-fill by role type, and flag agencies that consistently miss it.
What it measures: The number of job orders an agency receives compared to the number they actually fill.
Why it matters: The closer an agency's fill rate is to 100%, the more reliably they're helping you meet your workforce targets.
How to use it: Set realistic fill rate benchmarks and prioritize agencies that consistently meet or exceed them.
What it measures: How many candidate submissions from an agency result in an interview.
Why it matters: A low ratio suggests an agency is submitting candidates without properly screening them against your requirements first.
How to use it: Track this ratio by agency to identify which ones understand your hiring criteria and which ones are submitting volume over fit.
What it measures: The number of candidate submissions compared to actual hires.
Why it matters: This is the clearest signal of how efficiently an agency sources candidates who are actually right for the role.
How to use it: Compare this ratio across agencies to identify which ones consistently deliver quality over quantity.
What it measures: How quickly an agency submits candidates after receiving a job order.
Why it matters: Slow submission times delay the entire hiring process, no matter how strong the eventual candidate is.
How to use it: Set a submission-time expectation as part of your agency agreements, and track it consistently.
What it measures: An agency's ability to meet legal, regulatory, and company-specific compliance requirements.
Why it matters: Non-compliance exposes your organization to risks like fines, lawsuits, and reputational damage.
How to use it: Implement periodic audits and measure adherence to background checks, certifications, and other required standards.
How to use it: Regularly monitor compliance to ensure agencies are delivering cost-effective services within agreed-upon terms.
Metrics only matter if you act on them. To get the most from staffing agency KPI tracking:
You can't manage what you don't measure.
Tracking these KPIs gives you the visibility to know which staffing agencies are truly earning their place in your program, and a VMS is what makes tracking them consistent, automated, and actionable instead of a manual, agency-by-agency guessing game.
The most important KPIs are time-to-fill, fill rate, submission-to-interview ratio, submission-to-hire ratio, time-to-submit, worker quality and retention, assignment completion (turnover), and compliance rate.
Tracking performance shows you which staffing agencies are actually helping you meet your workforce goals, giving you the visibility to coach underperforming agencies or replace them, and the data to hold every vendor accountable.
A VMS centralizes staffing agency data into one platform, automating reporting on spend, compliance, and performance so you get consistent, real-time visibility instead of comparing spreadsheets by hand.
There's no universal number, since it depends on role type and market, but the closer an agency's fill rate is to 100%, the more reliably they're meeting your workforce needs. Set your own benchmark based on your program's history and hold agencies to it consistently.
Most organizations review core metrics like fill rate and time-to-fill monthly, with a deeper compliance and quality review on a quarterly basis.
Yes. A VMS gives you consistent, apples-to-apples reporting across every agency in your program, so you can benchmark performance and make informed decisions about who to scale up or scale back.
Conexis VMS is an award-winning vendor management system built for organizations that want the power of enterprise software without the complexity or cost.
Leveraging the latest technology, Conexis VMS delivers the expertise, reliability and security of enterprise systems, while offering the flexibility, user friendliness and tailored, personal service you require. Learn more about our Company and what makes Conexis VMS different.
Conexis VMS is trusted by staffing agencies, MSPs and leading organizations to modernize and manage their contingent workforce programs. Here's why organizations choose Conexis VMS:
Modern VMS Technology - Built on the latest AWS microservices architecture and Open API
Fast Implementation - Get up and running in under a month, free setup and training included
Fully Branded White-Label VMS - Your Logo. Your Domain. Your Branded Communication
Flexible Pricing - No setup fees, with free implementation, training and account management
We work with teams at every stage, from first-time buyers to companies replacing outdated platforms that can't keep up. Either way, we'll show you what a modern VMS looks like, up and running in under 30 days.