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- All HBS Web (1,067)
- Faculty Publications (810)
- August 2018 (Revised April 2019)
- Case
Fair Value Accounting at Berkshire Hathaway Inc. (A)
By: Jonas Heese, Suraj Srinivasan, Francois Brochet and Christine Johnson
In May 2018, Berkshire Hathaway announced an unprecedented loss of more than $1 billion for the first quarter of 2018. Warren Buffett blamed this loss on the new accounting rules for equity securities which he criticized. In the case ‘Fair Value Accounting at Berkshire... View Details
Keywords: Equity Securities; FASB; Fair Value Accounting; Governing Rules, Regulations, and Reforms; Financial Services Industry
Heese, Jonas, Suraj Srinivasan, Francois Brochet, and Christine Johnson. "Fair Value Accounting at Berkshire Hathaway Inc. (A)." Harvard Business School Case 119-030, August 2018. (Revised April 2019.)
- March 2021
- Article
The Impact of the General Data Protection Regulation on Internet Interconnection
By: Ran Zhuo, Bradley Huffaker, KC Claffy and Shane Greenstein
The Internet comprises thousands of independently operated networks, where bilaterally negotiated interconnection agreements determine the flow of data between networks. The European Union’s General Data Protection Regulation (GDPR) imposes strict restrictions on... View Details
Keywords: Personal Data; Privacy Regulation; GDPR; Interconnection Agreements; Internet and the Web; Governing Rules, Regulations, and Reforms
Zhuo, Ran, Bradley Huffaker, KC Claffy, and Shane Greenstein. "The Impact of the General Data Protection Regulation on Internet Interconnection." Telecommunications Policy 45, no. 2 (March 2021).
- January 2023 (Revised November 2024)
- Technical Note
Legal Analysis: Labor Unions in the United States
By: Reshmaan Hussam, Trevor Fetter and Grace Liu
This note provides an overview of the regulation, mechanics, and history of labor unions in the United States, along with an overview of their place in the early 21st century. View Details
Hussam, Reshmaan, Trevor Fetter, and Grace Liu. "Legal Analysis: Labor Unions in the United States." Harvard Business School Technical Note 723-031, January 2023. (Revised November 2024.)
- June 2019
- Case
Fangda Partners: A Step Ahead
By: Ashish Nanda and Lisa Rohrer
Elite Chinese law firm Fangda Partners has steered Alibaba and other Chinese and international clients through the complex legal, corporate, and regulatory challenges associated with executing international transactions. “Fangda has traveled a long distance in a short... View Details
Keywords: Law Firm; Law Firms; Growth; Legal Industry; Regulation; Professional Services; Law; Leadership; Growth and Development; Strategy; Governing Rules, Regulations, and Reforms; Legal Services Industry; China
Nanda, Ashish, and Lisa Rohrer. "Fangda Partners: A Step Ahead." Harvard Business School Case 719-406, June 2019.
- June 9, 2023
- Article
A Radical Treatment for Insulin Pricing
By: Leemore S. Dafny
In 2021, the Food and Drug Administration (FDA) approved the first interchangeable biosimilar for long-acting insulin, which many hoped would be substantially cheaper than the reference branded product. I explain why prices have barely changed, and argue that a... View Details
Keywords: Biosimilars; Rebates; Pharmaceuticals; Health Care and Treatment; Price; Governing Rules, Regulations, and Reforms; Pharmaceutical Industry; United States
Dafny, Leemore S. "A Radical Treatment for Insulin Pricing." New England Journal of Medicine 386, no. 23 (June 9, 2023): 2157–2159.
- October 1992 (Revised August 2005)
- Background Note
Estate Freeze
By: Henry B. Reiling
The so called estate freeze is a classic estate planning and recapitalization practice. It seeks to reconcile the multiple human and business considerations associated with transferring operating control and the future increases in the value of a family dominated... View Details
Keywords: Personal Finance; Governing Rules, Regulations, and Reforms; Laws and Statutes; Financial Services Industry; United States
Reiling, Henry B. "Estate Freeze." Harvard Business School Background Note 293-063, October 1992. (Revised August 2005.)
- April 8, 2025
- Article
Creating Workplaces Free of Forever Chemicals
By: Joseph G. Allen, Heather A. Henrikson and Michael W. Toffel
Forever chemicals are toxic and widely used in buildings and yet they remain on the rise globally with little regulation to control them. In the United States, for example, Environmental Protection Agency (EPA) regulations currently cover only forever chemicals in... View Details
Keywords: Occupational Health; Safety Regulations; Regulation; Working Conditions; Governing Rules, Regulations, and Reforms; Safety; Health
Allen, Joseph G., Heather A. Henrikson, and Michael W. Toffel. "Creating Workplaces Free of Forever Chemicals." Harvard Business Review Digital Articles (April 8, 2025).
- September 2024
- Case
Comun: Partners in Peril
By: Jeffrey J. Bussgang and Alexis Lefort
In spring 2023, Abiel Gutierrez and Andres Santos, co-founders of Comun, faced a critical decision at their fintech startup serving Latino immigrants. Having launched their product the previous year, they experienced rapid growth but encountered rising fraud and... View Details
Keywords: Fintech; Business Development; Venture Capital; Business Startups; Partners and Partnerships; Governing Rules, Regulations, and Reforms; Financial Services Industry; Banking Industry; Latin America; United States
Bussgang, Jeffrey J., and Alexis Lefort. "Comun: Partners in Peril." Harvard Business School Case 825-036, September 2024.
- July 2024 (Revised December 2024)
- Background Note
District Heating: An Overview
By: Willy Shih and Michael W. Toffel
This note provides an overview of district heating: systems in which central plants generate heat that is conveyed by steam or water through a set of insulated pipes to send heat to residential and/or commercial buildings. It describes key elements of the system (heat... View Details
Keywords: Decarbonization; Energy Efficiency; Energy Storage; Energy Transmission; Construction; Energy; Buildings and Facilities; Governing Rules, Regulations, and Reforms; Climate Change; Operations; Energy Industry; Denmark; Europe; United States
Shih, Willy, and Michael W. Toffel. "District Heating: An Overview." Harvard Business School Background Note 625-008, July 2024. (Revised December 2024.)
- August 2011
- Module Note
Assessing the Legal Climate for Entrepreneurship
By: Lena G. Goldberg
This module note briefly reviews several approaches to assessing the link between law and specific rules and regulations and a favorable climate for entrepreneurship and economic growth. View Details
- 23 Jul 2020
- Research & Ideas
How Countries Use Financial Policy to Fight COVID-19
fingertips: Harvard MBA students. Over the course of three months, they created the Global Policy Tracker, an interactive site that compares government policies and financial maneuvers for dozens of... View Details
Keywords: by Rachel Layne
- 31 Jan 2019
- Cold Call Podcast
How Wegmans Became a Leader in Improving Food Safety
- July 2010 (Revised September 2011)
- Background Note
The Profession of the Law
By: Lena G. Goldberg and Chad Carr
This note reviews the professional responsibilities and obligations of lawyers In the United States, explains how those standards affect client relationships and, by summarizing rules for resolution of conflicts and withdrawal, sets the stage for a discussion of the... View Details
Keywords: Attorney and Client Relationships; Governing Rules, Regulations, and Reforms; Ethics; Standards; Legal Services Industry; United States
Goldberg, Lena G., and Chad Carr. "The Profession of the Law." Harvard Business School Background Note 311-028, July 2010. (Revised September 2011.)
- November 2022 (Revised March 2023)
- Case
OneSmart
By: Nien-he Hsieh, Meg Rithmire and Shu Lin
At the end of 2021, Xi “Steve” Zhang was facing an existential crisis for himself and his business. OneSmart was a premium educational company founded in 2008 offering K-12 afterschool tutoring for students nationwide under a number of brands. The company was founded... View Details
Keywords: Governing Rules, Regulations, and Reforms; Crisis Management; Failure; Education Industry; China
Hsieh, Nien-he, Meg Rithmire, and Shu Lin. "OneSmart." Harvard Business School Case 723-017, November 2022. (Revised March 2023.)
- 2022
- Working Paper
Post-market Surveillance of Software Medical Devices: Evidence from Regulatory Data
By: Alexander O. Everhart and Ariel D. Stern
Medical devices increasingly include software components, which facilitate remote patient monitoring. The introduction of software into previously analog medical devices as well as innovation in software-driven devices may introduce new safety concerns—all the more so... View Details
Keywords: Technological Innovation; Safety; Governing Rules, Regulations, and Reforms; Health Care and Treatment; Medical Devices and Supplies Industry
Everhart, Alexander O., and Ariel D. Stern. "Post-market Surveillance of Software Medical Devices: Evidence from Regulatory Data." Harvard Business School Working Paper, No. 23-035, November 2022.
- Article
Research: The Cost of a Single U.S. Immigration Restriction
By: Dany Bahar, Prithwiraj Choudhury and Britta Glennon
On June 22, 2020, President Trump passed an Executive Order drastically cutting the number of highly skilled international workers eligible for non-immigrant visas to the U.S. To quantify the impact of this policy, the authors examined the immediate change in stock... View Details
Keywords: Work Visas; H1-B; Restriction; Impact; Immigration; Governing Rules, Regulations, and Reforms; Cost; Economy
Bahar, Dany, Prithwiraj Choudhury, and Britta Glennon. "Research: The Cost of a Single U.S. Immigration Restriction." Harvard Business Review (website) (January 22, 2021).
- 2019
- Working Paper
The Impact of the General Data Protection Regulation on Internet Interconnection
By: Ran Zhuo, Bradley Huffaker, KC Claffy and Shane Greenstein
The Internet comprises thousands of independently operated networks, where bilaterally negotiated interconnection agreements determine the flow of data between networks. The European Union’s General Data Protection Regulation (GDPR) imposes strict restrictions on... View Details
Keywords: Personal Data; Privacy Regulation; GDPR; Interconnection Agreements; Internet and the Web; Governing Rules, Regulations, and Reforms; European Union
Zhuo, Ran, Bradley Huffaker, KC Claffy, and Shane Greenstein. "The Impact of the General Data Protection Regulation on Internet Interconnection." NBER Working Paper Series, No. 26481, November 2019.
- 2024
- Working Paper
Fecal Microbiota Transplants —Too Simple to be Safe? Case Histories of Transformational Advances
By: Amar Bhide and Srikant M. Datar
By 2013, after many decades of very slow development and adoption, Fecal Microbiota Transplantation procedures were attracting widespread attention. This case history chronicles the: 1) pioneering fecal transplants performed in the 20th century; 2) development of the... View Details
Keywords: Health Care and Treatment; Innovation and Invention; Governing Rules, Regulations, and Reforms
Bhide, Amar, and Srikant M. Datar. "Fecal Microbiota Transplants —Too Simple to be Safe? Case Histories of Transformational Advances." Harvard Business School Working Paper, No. 21-132, June 2021. (Revised May 2024.)
- February 2025
- Case
Abiomed: A Change of Heart
By: Satish Tadikonda, Faith Robertson and William Marks
After acquiring Impella CardioSystems AG in May 2005, Abiomed Inc., a company focused on cardiac care, ran into a dilemma. Its Impella 2.5 device was approved for use in the European Union, but CEO Michael Minogue had seemingly bet the company's future on the ability... View Details
Keywords: Mergers and Acquisitions; Governing Rules, Regulations, and Reforms; Health Care and Treatment; Business and Government Relations; Medical Devices and Supplies Industry; European Union; United States
Tadikonda, Satish, Faith Robertson, and William Marks. "Abiomed: A Change of Heart." Harvard Business School Case 825-011, February 2025.