Washington, DC

Lawrence P. Halprin

  • Partner
  • Direct Dial: +1 202.434.4177
  • Fax: +1 202.434.4646
  • Professional Assistants: KristinMarie Marcil and Elizabeth Wilmore, Ph: +1 202.434.4343

    Washington, DC

    1001 G Street NW
    Suite 500 West
    Washington, DC 20001

Lawrence Halprin is nationally recognized for his work in the areas of occupational safety and health, and chemical regulation, at the federal and state levels. His occupational safety and health practice covers all aspects of legal advocacy, including: representing clients in Federal and state OSHA investigations and enforcement actions; compliance counseling and training; incident investigations, compliance audits and program reviews; participation in OSHA, NIOSH, EPA and MSHA rulemakings and stakeholders processes, including Small Business Reviews under SBREFA; pre-enforcement challenges to final agency rules; legislative reform and oversight; and participation in the development of national consensus standards under the ANSI process, and TLVs under the ACGIH process.

Mr. Halprin's engineering background and historical knowledge of agency rulemakings have greatly enhanced his ability to provide compliance counseling and represent clients in  enforcement actions. He has extensive experience with federal and state OSHA investigations and enforcement actions involving: chemical emergency response, chemical process safety management, chemical hazard communication, combustible dust, confined spaces, electrical safety, the General Duty Clause, (Cal-OSHA) injury and illness prevention programs, injury and illness recordkeeping, lockout/tagout, machine guarding, noise, powered industrial trucks, respiratory protection, and alleged employer retaliation claims.

Mr. Halprin's engineering background and financial background have been particularly useful in evaluating and critiquing OSHA, EPA and MSHA rulemaking proposals and suggesting alternative approaches. On behalf of one or more clients, Mr. Halprin has participated in almost every major OSHA rulemaking initiative over the past 25 years and numerous Cal-OSHA rulemakings.

Mr. Halprin also counsels individual companies and trade associations regarding a broad range of chemical control and management activities regulated by the Environmental Protection Agency and the U.S. Tax and Trade Bureau (ethanol regulations), and investigations conducted by the Chemical Safety Board.  He works with clients in developing, implementing and auditing environmental, health and safety, and product stewardship management programs.

Mr. Halprin has a hands-on familiarity with the manufacturing environment and has represented clients in a broad range of industries, including aerospace, chemical, construction, electronics, food, machinery, paper and forest products, petroleum, pharmaceuticals, plastics, steel, telecommunications and transportation. He is a member of several ANSI and ASTM technical committees that address chemical safety, machinery safety, occupational health and safety, and nanotechnology, and he regularly follows and participates in the development of combustible dust standards by NFPA.

Mr. Halprin has been a strong advocate of measures to enhance the effectiveness of regulatory agencies. He has testified before Congress and participated in numerous government rulemakings in an effort to ensure that the scope and requirements of agency rules reflect what is necessary, practical and justified by appropriate risk assessment and cost-benefit analyses. Mr. Halprin is a frequent writer and speaker on a broad range of environmental, health and safety management issues.

In his transactional practice, Mr. Halprin has provided counsel and negotiated: waste management agreements; purchase, leasing and financing agreements for commercial properties, drilling equipment and computer systems; and telecommunications system design, construction and operating agreements. Before joining Keller and Heckman, Mr. Halprin clerked for the Honorable Charles R. Johnston of the U.S. Tax Court.

Participation in Litigation, Rulemaking and Policy Developments with Widespread Impact

  • Represented Theravance Biopharma, Inc. in successfully petitioning NIOSH to remove telavacin from the NIOSH List of Antineoplastic and Other Harzardous Drugs in Health Care Settings in April 2017.
  • Represented the American Forest & Paper Association and the American Wood Council in their successful effort to have OSHA clarify when a combustible dust accumulation is considered excessive. See the April 21, 2015 OSHA guidance memorandum titled “Evaluating Hazardous Levels of Accumulation Depth for Combustible Dusts” at https://www.osha.gov/dep/enforcement/Combustible_Dusts_04212015.html
  • Lead counsel for the American Petroleum Institute in its legal challenge to OSHA’s March 2012 GHS Amendment to the OSHA Hazard Communication Standard (HCS), resulting in a successful settlement that clarified the application of the amended HCS to combustible dust, petroleum streams and hazards not otherwise classified.
  • Co-counsel and primary author of the comments for the primary industry coalition (led by the National Association of Manufacturers) challenging OSHA's proposed October 19, 2010 re-interpretation of the OSHA Noise Standard.
  • Co-counsel and primary author of the comments for the primary industry coalition (led by the US Chamber of Commerce) challenging OSHA's proposed January 29, 2010 addition of a musculoskeletal disorders (MSD) column to the OSHA Injury And Illness Recordkeeping Rule.
  • Primary author of the comments submitted on behalf of the Grocery Manufacturers Association in the Cal-OSHA Diacetyl Rulemaking to preserve the exemption for flavors containing less than 1% diacetyl
  • Lead counsel for the successful intervention on behalf of the Aerospace Industries Association to preserve the Separate Engineering Control Airborne Limits (SECAL), permissible exposure limit (PEL) and action level (AL) of OSHA's Hexavalent Chromium Standard against the challenge brought by Public Citizen. Public Citizen Health Research Group v. Dept. of Labor, 557 F.3d 165 (3d Cir. 2009).
  • Author of the comments submitted to the Chemical Safety Board (CSB) that apparently persuaded the CSB to conclude that it did not have the legal authority under the Clean Air Act to adopt the proposed "Accident Investigation Initiation Notice and Order to Preserve Evidence [Rule]," which was published in the Federal Register on January 4, 2006 (71 FR 309).
  • As lead counsel for the American Forest & Paper Association, negotiated an unprecedented OSHA compliance instruction (effectively a generic variance) covering the design, operation and maintenance of chemical batch digesters -- a type of pressure vessel in wide use within the paper industry to convert wood chips into pulp. See OSHA Directive CPL 02-01-041, EFFECTIVE DATE: 9-16-04, SUBJECT: Alternative Abatement Method for 29 CFR 1910.261(g)(17) – Over-pressure Protection for Batch 


Practice Areas


  • University of Pennsylvania
    • B.S. Ch.E, 1974, with honors
  • Duquesne University School of Law
    • J.D., 1977, Duquesne Law Review
  • George Washington University
    • M.B.A., 1984, Finance and Investments, Beta Gamma Sigma

Bar Admissions

  • District of Columbia
  • Pennsylvania
  • U.S. Court of Appeals for the Third Circuit
  • U.S. Court of Appeals for the D.C. Circuit
  • U.S. District Court for the District of Columbia
  • U.S. Court of Appeals for the Fifth Circuit
  • U.S. Court of Federal Claims
  • U.S. Tax Court
  • U.S. Court of Appeals for the Eleventh Circuit


  • American Bar Association


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