Company lists · Data refreshed September 2026

Top 25 Contract lab staffing agencies based in the United States

Name: Contract lab staffing agencies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 2,308 companies tracked

RevenueBase identified 2,308 contract lab staffing agencies headquartered in the United States as of September 2026 and tracks 80,033 professional contacts across them, including 11,990 with verified work emails. New York is the largest hub.

This list covers contract lab staffing agencies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review

2,308Companies

80,033Contacts tracked

11,990Verified emails

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The 25 largest contract lab staffing agencies based in the United States

Ranked by team size

Top 25 of 2,308 contract lab staffing agencies based in the United States, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to contract lab staffing agencies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Spherion	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 27, 2026	10001+	4,263 contacts →
	Partial evidence “We’re Spherion-a staffing and recruiting pioneer that’s been driving careers and helping businesses grow for over 75 years.” Source: RevenueBase Database · checked Sep 27, 2026
2	Labormax Staffing	Partial evidence	Kearney, MO, United StatesHQ checked Sep 27, 2026	n/a	1,755 contacts →
	Partial evidence “LaborMAX Staffing is your reliable provider of quality pre-screened contingent workers.” Source: RevenueBase Database · checked Sep 27, 2026
3	Elite Staffing INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	10001+	1,661 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 27, 2026
4	Onin Staffing	Partial evidence	Birmingham, AL, United StatesHQ checked Sep 27, 2026	10001+	1,614 contacts →
	Partial evidence “Ōnin Staffing, a company of The Ōnin Group, is a national light industrial and clerical staffing agency.” Source: RevenueBase Database · checked Sep 27, 2026
5	Construction Labor Contractors	Partial evidence	Round Rock, TX, United StatesHQ checked Sep 27, 2026	501-1,000	1,234 contacts →
	Partial evidence “Let us make construction staffing work for you.” Source: RevenueBase Database · checked Sep 27, 2026
6	locumtenens.com	Partial evidence	Alpharetta, GA, United StatesHQ checked Sep 27, 2026	501-1,000	1,171 contacts →
	Partial evidence “LocumTenens.com specializes in optimizing healthcare staffing operations.” Source: RevenueBase Database · checked Sep 27, 2026
7	Totalmed	Strong evidence	Appleton, WI, United StatesHQ checked Sep 27, 2026	201-500	1,170 contacts →
	Strong evidence “TotalMed provides temporary, contract, and full time staffing services to hospitals, medical groups, health plans, and life sciences companies who require staffing assistance in…” Source: RevenueBase Database · checked Sep 27, 2026
8	Planet Pharma	Strong evidence	Raleigh, NC, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,088 contacts →
	Strong evidence “Founded in 2012, Planet Pharma is a global leader in life sciences recruitment and staffing, specializing in Pharmaceuticals, Biotechnology, Medical Device, Labs & Healthcare…” Source: RevenueBase Database · checked Sep 27, 2026
9	Lyneer Staffing Solutions	Partial evidence	Ewing, NJ, United StatesHQ checked Sep 27, 2026	201-500	1,012 contacts →
	Partial evidence “The Solution to Your Staffing Needs Lyneer Staffing Solutions is a national workforce solutions company with over 25 years of experience in the staffing industry.” Source: RevenueBase Database · checked Sep 27, 2026
10	Pacesetter Personnel Services	Indirect evidence	Houston, TX, United StatesHQ checked Sep 27, 2026	201-500	894 contacts →
	Indirect evidence “We offer reliable, affordable temporary labor.” Source: RevenueBase Database · checked Sep 27, 2026
11	Imcs Group	Partial evidence	Irving, TX, United StatesHQ checked Sep 27, 2026	201-500	881 contacts →
	Partial evidence “IMCS Group is an IT, Healthcare, and Professional Staffing Company that helps Enterprises optimize the business value of their Staffing investments and enables them to achieve…” Source: RevenueBase Database · checked Sep 27, 2026
12	Medpro Healthcare Staffing	Strong evidence	Fort Lauderdale, FL, United StatesHQ checked Sep 27, 2026	501-1,000	855 contacts →
	Strong evidence “MedPro Healthcare Staffing is a Joint Commission certified, leading provider of temporary and contract staffing services to healthcare facilities throughout the United States.” Source: RevenueBase Database · checked Sep 27, 2026
13	The Liberty Group	Partial evidence	Houston, TX, United StatesHQ checked Sep 27, 2026	201-500	849 contacts →
	Partial evidence “The Liberty Group is a national multifamily staffing partner connecting property teams with experienced talent that keeps operations moving.” Source: RevenueBase Database · checked Sep 27, 2026
14	Integrated Resources, INC IRI	Strong evidence	Edison, NJ, United StatesHQ checked Sep 27, 2026	501-1,000	762 contacts →
	Strong evidence “Integrated Resources Inc.(IRI) is a professional staffing firm specializing in contract, consulting & full time positions in the area of Information Technology, Life Science and…” Source: RevenueBase Database · checked Sep 27, 2026
15	Trojan Labor	Partial evidence	Goose Creek, SC, United StatesHQ checked Sep 27, 2026	n/a	732 contacts →
	Partial evidence “Trojan Labor Specializes in matching Customers who have industrial and Light Industrial staffing needs while never forgetting who the CUSTOMER is.” Source: RevenueBase Database · checked Sep 27, 2026
16	Hospitality Staffing Solutions	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 27, 2026	5,001-10,000	656 contacts →
	Partial evidence “Today, Hospitality Staffing Solutions is recognized as the industry leader.” Source: RevenueBase Database · checked Sep 27, 2026
17	Trillium Staffing Solutions	Partial evidence	Kalamazoo, MI, United StatesHQ checked Sep 27, 2026	1,001-5,000	653 contacts →
	Partial evidence “Trillium Staffing Solutions is an employment service specializing in staffing, training, testing, on-site services, human resources and safety consulting.” Source: RevenueBase Database · checked Sep 27, 2026
18	Epic Staffing Group	Partial evidence	El Segundo, CA, United StatesHQ checked Sep 27, 2026	501-1,000	651 contacts →
	Partial evidence “Epic Staffing Group is a diversified national provider of staffing services to the Life Sciences and Healthcare industries.” Source: RevenueBase Database · checked Sep 27, 2026
19	Malone Workforce Solutions	Indirect evidence	Louisville, KY, United StatesHQ checked Sep 27, 2026	201-500	646 contacts →
	Indirect evidence “Malone takes care of business by taking care of people.” Source: RevenueBase Database · checked Sep 27, 2026
20	Automation Personnel Services, INC	Indirect evidence	Birmingham, AL, United StatesHQ checked Sep 27, 2026	10001+	624 contacts →
	Indirect evidence “Automation Personnel Services was founded in Birmingham, AL almost 30 years ago and has expanded coast to coast with 40 Branch offices in eleven states.” Source: RevenueBase Database · checked Sep 27, 2026
21	Hirequest Direct	Indirect evidence	Nashville, TN, United StatesHQ checked Sep 27, 2026	n/a	618 contacts →
	Indirect evidence “HireQuest Direct specializes in day labor, general labor, disaster recovery, skilled labor, janitorial, site clean-up, composite crew, demolition, administrative, hospitality…” Source: RevenueBase Database · checked Sep 27, 2026
22	Mitchell Martin INC	Partial evidence	New York, NY, United StatesHQ checked Sep 27, 2026	501-1,000	614 contacts →
	Partial evidence “Mitchell Martin Inc.(MMI) is one of the largest employee-owned staffing firms in the U.S, specializing in IT, healthcare, healthcare IT, accounting and finance, and professional…” Source: RevenueBase Database · checked Sep 27, 2026
23	ALL Team Staffing	Indirect evidence	Tampa, CO, United StatesHQ checked Sep 27, 2026	501-1,000	602 contacts →
	Indirect evidence “All Team is a nationwide employment agency that supports 20+ markets from coast to coast.” Source: RevenueBase Database · checked Sep 27, 2026
24	Link Staffing	Partial evidence	Houston, TX, United StatesHQ checked Sep 27, 2026	1,001-5,000	579 contacts →
	Partial evidence “LINK Staffing has been placing competent, dependable talent with Texas employers since 1980.” Source: RevenueBase Database · checked Sep 27, 2026
25	MAS Medical Staffing	Strong evidence	Manchester, NH, United StatesHQ checked Sep 27, 2026	51-200	566 contacts →
	Strong evidence “MAS Medical Staffing brings a total staffing solution for our clients, offering per diem, contract and travel staff all under one agency.” Source: RevenueBase Database · checked Sep 27, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: contract lab staffing agencies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names contract lab staffing agencies.
Partial evidence: Its own public description names part of contract lab staffing agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name contract lab staffing agencies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 2,308 contract lab staffing agencies based in the United States

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Contract lab staffing agencies based in the United States at a glance

As of Sep 27, 2026

15.0%Verified-email coverage

34.7Average contacts per company

11-50Median size (employees)

2.8%Largest-city concentration · New York

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

791

11-50

623

51-200

503

201-500

208

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 2,308 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among contract lab staffing agencies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “contract lab staffing agencies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names contract lab staffing agencies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among contract lab staffing agencies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 11,990 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 27, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Contract lab staffing agencies by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names contract lab staffing agencies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many contract lab staffing agencies are there based in the United States?

RevenueBase identified 2,308 contract lab staffing agencies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Spherion, headquartered in Atlanta, tops this list with the largest team on record.

Which city has the most contract lab staffing agencies?

New York leads with 65 headquartered companies, followed by Houston (57) and Atlanta (44).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 11,990 verified decision-maker contacts tracked across these 2,308 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.