Company lists · Data refreshed September 2026

Top 25 Grievance management consultants based in the United States

Name: Grievance management consultants based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 337 companies tracked

RevenueBase identified 337 grievance management consultants headquartered in the United States as of September 2026 and tracks 2,113 professional contacts across them, including 914 with verified work emails. New York is the largest hub.

This list covers grievance management consultants 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 28, 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 28, 2026 86% judged on-target in blind review

337Companies

2,113Contacts tracked

914Verified emails

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The 25 largest grievance management consultants based in the United States

Ranked by team size

Top 25 of 337 grievance management consultants based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to grievance management consultants: 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	The Vertex Companies LLC	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	501-1,000	765 contacts →
	Partial evidence “The Vertex Companies, LLC is a global consulting firm that provides strategic advisory, project management, and dispute resolution services for organizations that face complex…” Source: RevenueBase Database · checked Sep 28, 2026
2	People Results	Partial evidence	Troy, MI, United StatesHQ checked Sep 28, 2026	51-200	87 contacts →
	Partial evidence “People Results is an experienced team of consultants who collaborate, innovate, and anticipate mission-critical challenges and deliver impactful business results.” Source: RevenueBase Database · checked Sep 28, 2026
3	LRI Consulting Services, Inc. Approachable Leadership	Indirect evidence	Broken Arrow, OK, United StatesHQ checked Sep 28, 2026	11-50	41 contacts →
	Indirect evidence “LRI Consulting Services, Inc.” Source: RevenueBase Database · checked Sep 28, 2026
4	Clemans, Nelson & Associates, INC	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 28, 2026	11-50	40 contacts →
	Indirect evidence “Clemans Nelson is the preeminent public sector labor relations and human resource consulting firm in the state of Ohio.” Source: RevenueBase Database · checked Sep 28, 2026
5	FH Solutions Group	Indirect evidence	District Of Columbia, United StatesHQ checked Sep 28, 2026	11-50	40 contacts →
	Indirect evidence “FH Solutions Group (FHSG) is a national human resources and labor relations consulting firm headquartered in Washington, DC.” Source: RevenueBase Database · checked Sep 28, 2026
6	Hirsch Roberts Weinstein LLP	Indirect evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	11-50	36 contacts →
	Indirect evidence “HRW’s team of experienced attorneys helps employers remain in compliance with the law and avoid or resolve every manner of workplace dispute.” Source: RevenueBase Database · checked Sep 28, 2026
7	Employment Practices Solutions, INC	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 28, 2026	11-50	27 contacts →
	Indirect evidence “Human Resources and Employment Law Experts: For 30 years, EPS has collaborated with organizations nationwide to build respect through high-quality training, objective and unbiased…” Source: RevenueBase Database · checked Sep 28, 2026
8	Tams Group	Partial evidence	Independence, OH, United StatesHQ checked Sep 28, 2026	11-50	27 contacts →
	Partial evidence “TAMS Group is a management consulting firm focused on providing practical human resource solutions designed to improve employee and organizational productivity, and minimize risk…” Source: RevenueBase Database · checked Sep 28, 2026
9	Pollack Peacebuilding Systems	Indirect evidence	Phoenix, AZ, United StatesHQ checked Sep 28, 2026	11-50	23 contacts →
	Indirect evidence “Pollack Peacebuilding Systems is an international workplace conflict resolution firm, providing organizational peacebuilding, training, and coaching.” Source: RevenueBase Database · checked Sep 28, 2026
10	Global Leadership Alliance	Indirect evidence	Sacramento, CA, United StatesHQ checked Sep 28, 2026	1-10	23 contacts →
	Indirect evidence “GLA is a consulting firm specializing in the development and implementation of Collaborative Dispute Mitigation (CDM) systems for agencies, organizations, and construction…” Source: RevenueBase Database · checked Sep 28, 2026
11	Bashen Corporation	Indirect evidence	Houston, TX, United StatesHQ checked Sep 28, 2026	11-50	18 contacts →
	Indirect evidence “Since 1994, Bashen Corporation has strengthened EEO programs for private sector employers, federal agencies, and EPL carriers.” Source: RevenueBase Database · checked Sep 28, 2026
12	Sanguine Strategic Advisors	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	11-50	17 contacts →
	Indirect evidence “Sanguine Strategic Advisors (SSA) applies 25 years of business development, financial, operational, compliance, legal and leadership experience to bring an Optimistic, Insightful…” Source: RevenueBase Database · checked Sep 28, 2026
13	ADR Vantage, INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	17 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
14	Holden LAW Group	Indirect evidence	Auburn, CA, United StatesHQ checked Sep 28, 2026	1-10	12 contacts →
	Indirect evidence “We are proud to offer clients access to the very finest legal and human resource consulting services.” Source: RevenueBase Database · checked Sep 28, 2026
15	Fortney & Scott, LLC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	12 contacts →
	Indirect evidence “FortneyScott is a Washington, DC-based law firm counseling and advising clients on the full spectrum of workplace-related matters.” Source: RevenueBase Database · checked Sep 28, 2026
16	Greenwald Doherty LLP Counsel For Employers	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	12 contacts →
	Partial evidence “Greenwald Doherty provides the comprehensive advice and representation that modern management needs to ensure effective labor and employment relations and defend against…” Source: RevenueBase Database · checked Sep 28, 2026
17	EPT Legal, LLC	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	1-10	11 contacts →
	Indirect evidence “The team at EPT Legal, LLC has been serving the New York area for decades.” Source: RevenueBase Database · checked Sep 28, 2026
18	Blanchard Consulting Group	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 28, 2026	1-10	11 contacts →
	Indirect evidence “Blanchard Consulting Group is a national compensation consulting firm with offices in Atlanta, GA and Minneapolis, MN.” Source: RevenueBase Database · checked Sep 28, 2026
19	Career Management Associates	Indirect evidence	Scarborough, ME, United StatesHQ checked Sep 28, 2026	1-10	11 contacts →
	Indirect evidence “Most companies don’t have a “people problem.” They have a growth problem that shows up through people.” Source: RevenueBase Database · checked Sep 28, 2026
20	Ksbranigan Law, P.C	Indirect evidence	Montclair, NJ, United StatesHQ checked Sep 28, 2026	1-10	11 contacts →
	Indirect evidence “KSBranigan Law P.C.” Source: RevenueBase Database · checked Sep 28, 2026
21	Claimlogix, LLC	Partial evidence	Pasadena, CA, United StatesHQ checked Sep 28, 2026	11-50	10 contacts →
	Partial evidence “Our consultant team brings over 50 years of experience specific to Workers' Compensation, Group Health, and Liability Insurance.” Source: RevenueBase Database · checked Sep 28, 2026
22	Clifford & Kenny, LLP	Partial evidence	Pembroke, MA, United StatesHQ checked Sep 28, 2026	11-50	9 contacts →
	Partial evidence “At Clifford & Kenny, our goal is to help clients minimize litigation through effective management strategies, training and policies.” Source: RevenueBase Database · checked Sep 28, 2026
23	Vantaggio HR	Indirect evidence	San Juan Capistrano, CA, United StatesHQ checked Sep 28, 2026	11-50	8 contacts →
	Indirect evidence “Vantaggio HR is a human resource consulting company providing business-savvy solutions to employers of all sizes, across all industries.” Source: RevenueBase Database · checked Sep 28, 2026
24	HR Fit, LLC	Indirect evidence	Peoria, United StatesHQ checked Sep 28, 2026	1-10	8 contacts →
	Indirect evidence “Every organization has a purpose, a mission.” Source: RevenueBase Database · checked Sep 28, 2026
25	Rimôn PC	Indirect evidence	Syosset, NY, United StatesHQ checked Sep 28, 2026	11-50	8 contacts →
	Indirect evidence “Portnoy, Messinger, Pearl & Associates, Inc.(PMP) is a full-service Human Resources & Labor Relations consulting firm that delivers affordable no-nonsense Human Resources…” Source: RevenueBase Database · checked Sep 28, 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: grievance management consultants. 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 grievance management consultants.
Partial evidence: Its own public description names part of grievance management consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name grievance management consultants. 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 337 grievance management consultants based in the United States

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Grievance management consultants based in the United States at a glance

As of Sep 28, 2026

43.3%Verified-email coverage

6.3Average contacts per company

1-10Median size (employees)

3.3%Largest-city concentration · New York

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

298

11-50

51-200

501-1,000

1,001-5,000

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 337 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 grievance management consultants, 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 “grievance management consultants”. 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 grievance management consultants), 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 grievance management consultants, 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, 914 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 28, 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.

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 grievance management consultants, 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 grievance management consultants are there based in the United States?

RevenueBase identified 337 grievance management consultants 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?

The Vertex Companies LLC, headquartered in New York, tops this list with the largest team on record.

Which city has the most grievance management consultants?

New York leads with 11 headquartered companies, followed by Los Angeles (10) and Chicago (9).

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 914 verified decision-maker contacts tracked across these 337 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 28, 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.