Conn Maciel Carey

Firm Profile

Rankings

USA

Awarded leading firm in USA 2025

Chambers and Partners

Ranked Departments:

Chambers and Partners

Ranked Individuals:

Overview

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Firm Details

Managing Partners: Eric J. Conn, Kara M. Maciel, and Aaron R. Gelb

Senior Partners: 5

Number of Partners: 12

Number of Other Attorneys: 14

Diversity: 7 Women Partners, 1 Women Associates, 2 Diverse Associates, a Woman Paralegal, and a Diverse Chief Operations Officer

Firm Overview

Conn Maciel Carey LLP (CMC) is a boutique law firm focused on OSHA & Workplace Safety Law, Labor and Employment Law, and MSHA & Mine Safety and Health Law. Despite the firm’s boutique size, our specialty Workplace Safety Practice features a deep bench of true OSHA-specialist attorneys with extensive, hands-on experience in all aspects of OSHA law at both the federal and state levels, who can provide the full range of occupational safety and health law services to a diverse range of clients, from representing employers in inspections, investigations and enforcement actions involving OSHA and State OSH Plans, to handling all aspects of OSHA litigation, from appeals of citations to criminal prosecutions.

CMC was born out of many years’ experience at large national law firms. Through our time at these “Big Law” firms, we developed an understanding of the quality of client service employers expect from sophisticated law firms, but also the challenges of delivering that level of service at good value, especially in the context of an OSHA practice. What also sets us apart is that we know our clients’ businesses and industries well, and we know how the relevant agencies work equally well, which positions us to recognize emerging OSHA legal and regulatory challenges our clients will face before they know it. Our reputation is based on more than 150 years of collective experience providing advice and counsel to employers through the development and enhancement of their safety and health programs, navigating new safety and health issues, government inspections, enforcement actions, and compliance audits.

Our OSHA practice is also truly national in scope. Our principal office is in DC, so we can maintain close ties with the leadership in federal OSHA’s national office, but we have practiced extensively before every federal OSHA Regional Office and every approved State OSH Plan, out of our offices in California, Chicago, Columbus, OH, and Detroit, MI.

Main Areas of Practice

Range of Work

  • Federal OSHA and State OSH Plan Accident and Catastrophe Inspections
  • Hearings and Appeals of Contested OSHA Citations at OSHRC and Federal Courts
  • Willful, Repeat, Egregious and Severe Violator Enforcement Program Citations
  • Multiemployer Worksite
  • Injury and Illness Recordkeeping and Serious Injury Reporting
  • Achieving and Maintaining OSHA VPP Status
  • Employee/Union Complaints
  • General Duty Clause Violations
  • EHS Deal Due Diligence in M&A
  • OSH Act Criminal Referrals and Prosecutions
  • Process Safety Management
  • OSHA Rulemaking
  • Workplace COVID-19 Issues

Representative Industries

  • Manufacturing
  • Construction
  • Agriculture
  • Petroleum Refining and Chemical Manufacturing
  • Healthcare and Life Sciences
  • Hospitality
  • Retail
  • Defense Contracting
  • Shipping, Logistics, and Warehousing
  • Aerospace and Airline Manufacturing and Operations
Offices

USA, Washington, District of Columbia

Eric J. Conn, Chair, OSHA Practice

5335 Wisconsin Avenue NW

Suite 660

Washington, D.C.20015

202.909.2737

[email protected]

USA, Chicago, Illinois

Aaron Gelb, Sr. OSHA Partner

53 West Jackson Boulevard

Suite 1352

Chicago, IL 60604

312.868.0294

[email protected]

USA, Columbus, Ohio

Nicholas Scala, Chair, MSHA Practice

4200 Regent Street, Suite 200

Columbus, OH 43219

330.704.6780

[email protected]

USA, Detroit, Michigan

Anthony Casaletta, Senior Counsel

801 W. Big Beaver Road

Suite 300

Troy, Michigan

313.429.1515

[email protected]

USA, San Francisco, California

Rachel Conn, Chair, California Practice

One Sansome Street

Suite 1400

San Francisco, CA

415.233.4551

[email protected]

USA, Los Angeles, California

10940 Wilshire Boulevard

Suite 1600

Los Angeles, CA

415.268.8894

Ranked Offices

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Address (A-Z)

USA - Head office

District of Columbia

5335 Wisconsin Avenue N.W. Suite 660 , Washington, DC, District of Columbia, USA, 20015, Washington, DC

www.connmaciel.com

+202 909-2730

USA

Illinois

53 West Jackson Boulevard Suite 1328 , Chicago, Illinois, USA, IL 60604, Chicago


California

One Sansome Street Suite 3500 , San Francisco, California, USA, 94104, San Francisco

Chambers Laurel

Ranked Departments

Band
Chambers Laurel

Ranked Individuals

Band
  • 1
    Eric Conn

    Head of Occupational Safety and Health, USA - Nationwide

  • 1
    Kathryn McMahon

    Occupational Safety and Health, USA - Nationwide

  • 2
    Aaron Gelb

    Occupational Safety and Health, USA - Nationwide

  • 3
    Rachel Conn

    Occupational Safety and Health, USA - Nationwide

  • 3
    Valerie Butera

    Occupational Safety and Health, USA - Nationwide

  • U
    Nicholas Scala

    Occupational Safety and Health, USA - Nationwide

Articles, highlights and press releases

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Conn Maciel Carey