Incentives, Commitments and Habit Formation in Exercise: Evidence from a Field Experiment with Workers at a Fortune-500 Company

Financial incentives have been shown to have strong positive short‐run effects for problematic health behaviors, but the effects often disappear once incentive programs end. This paper analyzes the results of a large‐scale workplace field experiment to examine whether self‐funded commitment contracts improve the long‐run effects of incentive programs. Consistent with existing findings, workers responded strongly to an incentive targeting use of the company gym, but long‐run effects were modest, at best. However, workers in the treatment arm that combined the incentive program with a commitment contract option showed long‐lasting behavioral changes, persisting even 1 year after the incentive ended.

[1]  Alan M. Garber,et al.  Committing to Exercise: Contract Design for Virtuous Habit Formation , 2010 .

[2]  David Laibson,et al.  Self Control and Liquidity: How to Design a Commitment Contract , 2011 .

[3]  Leslie K. John,et al.  Financial Incentives for Extended Weight Loss: A Randomized, Controlled Trial , 2011, Journal of General Internal Medicine.

[4]  Dean S. Karlan,et al.  Tying Odysseus to the Mast: Evidence from a Commitment Savings Product in the Philippines , 2005 .

[5]  Jonathan Zinman,et al.  Put Your Money Where Your Butt is: A Commitment Contract for Smoking Cessation , 2009 .

[6]  Kevin G Volpp,et al.  A randomized, controlled trial of financial incentives for smoking cessation. , 2009, The New England journal of medicine.

[7]  R. Baumeister,et al.  Ego Depletion: A Resource Model of Volition, Self-Regulation, and Controlled Processing , 2000 .

[8]  G. Loewenstein,et al.  P4P4P: an agenda for research on pay-for-performance for patients. , 2009, Health affairs.

[9]  Ted O’Donoghue,et al.  Doing It Now or Later , 1999 .

[10]  U. Gneezy,et al.  Journal of Economic Perspectives—Volume 25, Number 4—Fall 2011—Pages 191–210 When and Why Incentives (Don’t) Work to Modify Behavior , 2022 .

[11]  G. Charness,et al.  Letting Down the Team? Evidence of Social Effects of Team Incentives , 2011 .

[12]  R. Pollak,et al.  SECOND-BEST NATIONAL SAVING AND GAME-EQUILIBRIUM GROWTH , 1980 .

[13]  John L. Hartman,et al.  Networks and Workouts: Treatment Size and Status Specific Peer Effects in a Randomized Field Experiment , 2010 .

[14]  Ulrike Malmendier,et al.  Paying Not to Go to the Gym , 2006 .

[15]  R. Thaler,et al.  Save More Tomorrow™: Using Behavioral Economics to Increase Employee Saving , 2004, Journal of Political Economy.

[16]  Matthew Rabin,et al.  Choice and Procrastination , 2000 .

[17]  E. Moretti,et al.  Inequality at Work: The Effect of Peer Salaries on Job Satisfaction , 2010 .

[18]  David Cutler,et al.  Workplace wellness programs can generate savings. , 2010, Health affairs.

[19]  John A. List,et al.  Journal of Economic Behavior & Organization , 1999 .

[20]  Outcomes in a Program that Offers Financial Rewards for Weight Loss , 2009 .

[21]  E. Finkelstein,et al.  Annual medical spending attributable to obesity: payer-and service-specific estimates. , 2009, Health affairs.

[22]  R. Baumeister,et al.  Ego depletion: is the active self a limited resource? , 1998, Journal of personality and social psychology.

[23]  G. Loewenstein,et al.  Projection Bias in Predicting Future Utility , 2000 .

[24]  Jessica Goldberg,et al.  Revising Commitments: Field Evidence on the Adjustment of Prior Choices , 2012 .

[25]  E. Finkelstein,et al.  A Pilot Study Testing the Effect of Different Levels of Financial Incentives on Weight Loss Among Overweight Employees , 2007, Journal of occupational and environmental medicine.

[26]  R. Jeffery,et al.  Correspondence programs for smoking cessation and weight control: a comparison of two strategies in the Minnesota Heart Health Program. , 1990, Health psychology : official journal of the Division of Health Psychology, American Psychological Association.

[27]  P M Moodie,et al.  COHORT , 1971, The Medical journal of Australia.

[28]  G. Charness,et al.  Incentives to Exercise , 2008 .

[29]  R. H. Strotz.  Myopia and Inconsistency in Dynamic Utility Maximization , 1955 .

[30]  G. Loewenstein,et al.  Time Discounting and Time Preference: A Critical Review , 2002 .

[31]  Dean Karlan,et al.  Commitment Devices , 2009 .

[32]  Emre Ozdenoren,et al.  Willpower and the Optimal Control of Visceral Urges , 2006 .

[33]  I NICOLETTI,et al.  The Planning of Experiments , 1936, Rivista di clinica pediatrica.

[34]  Kevin G Volpp,et al.  Financial incentive-based approaches for weight loss: a randomized trial. , 2008, JAMA.

[35]  David I. Laibson,et al.  Golden Eggs and Hyperbolic Discounting , 1997 .

[36]  Katherine L. Milkman,et al.  Holding the Hunger Games Hostage at the Gym: an Evaluation of Temptation Bundling , 2013, Manag. Sci..