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Show Results For
- All HBS Web
(12,814)
- People (50)
- News (4,124)
- Research (5,361)
- Events (59)
- Multimedia (210)
- Faculty Publications (2,998)
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- February 2021 (Revised April 2024)
- Case
Shopify: The Conquest for Chinese E-Commerce
By: Jeffrey F. Rayport, Avani Patel, Samantha Lin and Ariel Yang
In mid-2020, Tobias Lütke, CEO of Shopify, faced a critical decision on how to time potential expansion into the China market. Over the prior 15 years, his Canadian software-as-a-service company had grown from a small e-commerce solutions provider to a full service... View Details
Keywords: Timing; Corporate Entrepreneurship; Service Operations; Business Model; Organizational Design; Change Management; Cross-Cultural and Cross-Border Issues; Global Strategy; Health Pandemics; Growth Management; Marketing Strategy; Digital Platforms; Alliances; Partners and Partnerships; Opportunities; Internet and the Web; E-commerce; United States; Canada; China
- February 2023
- Article
Nonprofits in Good Times and Bad Times
By: Christine L. Exley, Nils H. Lehr and Stephen J. Terry
Need fluctuates over the business cycle. We conduct a survey revealing a desire for nonprofit activities to countercyclically expand during downturns. We then demonstrate, using comprehensive U.S. nonprofit data drawn from millions of tax returns, that the public's... View Details
Exley, Christine L., Nils H. Lehr, and Stephen J. Terry. "Nonprofits in Good Times and Bad Times." Journal of Political Economy Microeconomics 1, no. 1 (February 2023): 42–79.
- November 2002 (Revised May 2003)
- Case
AOL Time Warner Foundation
Focuses on B. Keith Fulton, vice president of the AOL Time Warner Foundation, who is analyzing the results of a new partnership between the foundation and the National Council on Aging. Fulton is considering ways to build upon the partnership's initial success. View Details
Keywords: Nonprofit Organizations; Partners and Partnerships; Communications Industry; Public Administration Industry; Publishing Industry
Barrett, Diana, Cassandra Hanley, and Sarah Aaron. "AOL Time Warner Foundation." Harvard Business School Case 303-014, November 2002. (Revised May 2003.)
- March 2022
- Article
Estimating the Effectiveness of Permanent Price Reductions for Competing Products Using Multivariate Bayesian Structural Time Series Models
By: Fiammetta Menchetti and Iavor Bojinov
Researchers regularly use synthetic control methods for estimating causal effects when a sub-set of units receive a single persistent treatment, and the rest are unaffected by the change. In many applications, however, units not assigned to treatment are nevertheless... View Details
Keywords: Causal Inference; Partial Interference; Synthetic Controls; Bayesian Structural Time Series; Mathematical Methods
Menchetti, Fiammetta, and Iavor Bojinov. "Estimating the Effectiveness of Permanent Price Reductions for Competing Products Using Multivariate Bayesian Structural Time Series Models." Annals of Applied Statistics 16, no. 1 (March 2022): 414–435.
- February 2012 (Revised January 2013)
- Case
The New York Times Paywall
On March 28, 2011, The New York Times website became a restricted site where most of the content was protected behind a "paywall." Users who exceeded the limit of 20 free articles per month were required to pay for either a digital or print subscription. The newspaper... View Details
Kumar, Vineet, Bharat Anand, Sunil Gupta, and Felix Oberholzer-Gee. "The New York Times Paywall." Harvard Business School Case 512-077, February 2012. (Revised January 2013.)
- June 1993 (Revised April 2004)
- Teaching Note
Buying Time TN
By: William J. Bruns Jr.
Teaching Note for (9-192-045). View Details
- September 1994 (Revised May 1995)
- Case
Time Life, Inc. (A)
By: David A. Garvin and Jonathan West
Time Life has historically been a continuity book publisher, selling 20-volume book series via direct mail. Now, however, music and video/TV divisions have been added, and the CEO is trying to craft a strategy that will align the divisions so they can produce... View Details
Keywords: Business Strategy; Corporate Strategy; Business Divisions; Horizontal Integration; Production; Creativity; Alignment; Advertising; Publishing Industry
Garvin, David A., and Jonathan West. "Time Life, Inc. (A)." Harvard Business School Case 395-012, September 1994. (Revised May 1995.)
- January 2019
- Editorial
Accounting for Time
By: Ashley Whillans and Hanne Collins
Whillans, Ashley, and Hanne Collins. "Accounting for Time." Harvard Business Review: The Big Idea (January 2019).
- January 2002 (Revised February 2002)
- Case
Valuing the AOL Time Warner Merger
By: Lynda M. Applegate, Rena Miller and John N Rei
On January 11, 2000, AOL and Time Warner announced their intention to merge, creating what AOL CEO Stephen Case and Time Warner CEO Gerald Levin called the 21st century's first fully integrated communications, media, and entertainment company. This case, prepared from... View Details
Keywords: Mergers and Acquisitions; Management Analysis, Tools, and Techniques; Valuation; Situation or Environment; Media and Broadcasting Industry; Entertainment and Recreation Industry
Applegate, Lynda M., Rena Miller, and John N Rei. "Valuing the AOL Time Warner Merger." Harvard Business School Case 802-098, January 2002. (Revised February 2002.)
- Summer 2025
- Article
Time Well Spent: A New Way to Value Time Could Change Your Life
By: Leslie Perlow and Salvatore J Affinito
When individuals engage in fulfilling activities outside of work, they perform better on the job, but simply encouraging work-life balance doesn’t help with hour-by-hour time management. A new tool for measuring the subjective value of time for individuals as it varies... View Details
Perlow, Leslie, and Salvatore J Affinito. "Time Well Spent: A New Way to Value Time Could Change Your Life." MIT Sloan Management Review 66, no. 4 (Summer 2025): 44–49.
- June 1997 (Revised October 2001)
- Case
Tutor Time (B)
By: Paul A. Gompers and Catherine M. Conneely
Gompers, Paul A., and Catherine M. Conneely. "Tutor Time (B)." Harvard Business School Case 297-074, June 1997. (Revised October 2001.)
- June 1997 (Revised November 1998)
- Case
Tutor Time (A)
By: Paul A. Gompers
Gompers, Paul A. "Tutor Time (A)." Harvard Business School Case 297-064, June 1997. (Revised November 1998.)
- September 1992 (Revised September 2004)
- Background Note
Liabilities and Time
By: William J. Bruns Jr.
An introduction to accounting for liabilities. Both current liabilities and long-term debts are described, and illustrations of bond interest calculations and financial reporting formats are included. View Details
Bruns, William J., Jr. "Liabilities and Time." Harvard Business School Background Note 193-051, September 1992. (Revised September 2004.)
- March 1999
- Article
The Time Famine: Towards a Sociology of Work Time
By: Leslie Perlow
Keywords: Time Management
Perlow, Leslie. "The Time Famine: Towards a Sociology of Work Time." Administrative Science Quarterly 44, no. 1 (March 1999): 57–81.
- February 13, 2023
- Editorial
The Secret Tax on Women’s Time
By: Lauren C. Howe, Lindsay B. Howe and Ashley V. Whillans
When studies revealed the so-called pink tax, showing in 2015 that personal hygiene products “for her” cost 13% more than similar products for men, it caused outrage and action. The irony that women, despite generally having fewer financial resources than men, are... View Details
Howe, Lauren C., Lindsay B. Howe, and Ashley V. Whillans. "The Secret Tax on Women’s Time." Time 201, nos. 5-6 (February 13, 2023): 29.
- 2014
- Chapter
Better Timing of Cyber Conflict
By: Elisabeth Paulson and Christopher Griffin
In this paper, we construct a model of cyber-weapon deployment and attempt to determine an optimal deployment time for cyberweapons using this model. We compare and contrast our approach to that in Axelrod and Iliev (R. Axelrod and R. Iliev. Timing of cyber conflict.... View Details
Paulson, Elisabeth, and Christopher Griffin. "Better Timing of Cyber Conflict." In Proceedings of the Third ASE International Conference on Cyber Security. Los Angeles, CA: Academy of Science and Engineering, 2014.
- February 2002
- Article
Market Timing and Capital Structure
By: Malcolm Baker and Jeffrey Wurgler
It is well known that firms tend to raise equity when their market values are high relative to book and past market values. We document that the resulting effects on capital structure are very persistent. As a consequence, current capital structure is strongly related... View Details
Baker, Malcolm, and Jeffrey Wurgler. "Market Timing and Capital Structure." Journal of Finance 57, no. 1 (February 2002): 1–32. (Winner of Brattle Prize. First Prize Paper For outstanding papers on corporate finance published in the Journal of Finance presented by Brattle Group, Inc. Reprinted in Recent Developments in Corporate Finance, edited by Jay Ritter. Edward Elgar Publishing: UK, 2005.)
- July–August 2018
- Article
How CEOs Manage Time
By: Michael E. Porter and Nitin Nohria
In 2006 Harvard Business School’s Michael E. Porter and Nitin Nohria launched a study tracking how large companies’ CEOs spent their time, 24/7, for 13 weeks: where they were, with whom, what they did, and what they were focusing on. To date, Porter and Nohria have... View Details
Keywords: CEOs; Executives; Time Management; Attitudes; Managerial Roles; Leadership; Performance Effectiveness; Strategy; Decision Making; Organizational Culture
Porter, Michael E., and Nitin Nohria. "How CEOs Manage Time." Harvard Business Review 96, no. 4 (July–August 2018): 42–51.
- October 2009
- Article
Making Time Off Predictable—and Required
By: Leslie Perlow and Jessica L. Porter
People in professional services believe a 24/7 work ethic is essential for getting ahead—and so they work 60-plus hours a week and stay tethered to their BlackBerrys. This perpetuates a vicious cycle: Responsiveness breeds the need for more responsiveness. When people... View Details
Keywords: Management Practices and Processes; Performance Expectations; Performance Productivity; Work-Life Balance; Service Industry
Perlow, Leslie, and Jessica L. Porter. "Making Time Off Predictable—and Required." Harvard Business Review 87, no. 10 (October 2009).
- January 2008 (Revised August 2008)
- Case
The Time Warner Center: Mixed-Use Development
By: A. Eugene Kohn, Arthur I Segel and David Lane
Despite the failure of other attempts to bring mixed use development in New York City, Related Companies in 2004 opened Time Warner Center, a huge complex incorporating offices, shops, restaurants, music auditoriums, a hotel, and luxury apartments on Columbus Circle in... View Details
Keywords: Risk and Uncertainty; Marketing; Buildings and Facilities; Construction; Development Economics; New York (city, NY)
Kohn, A. Eugene, Arthur I Segel, and David Lane. "The Time Warner Center: Mixed-Use Development." Harvard Business School Case 208-081, January 2008. (Revised August 2008.)