Equity theory

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Equity theory focuses on determining whether the distribution of resources is fair to both relational partners. Equity is measured by comparing the ratio of contributions (or costs) and benefits (or rewards) for each person.[1] Considered one of the justice theories, equity theory was first developed in the 1960s by J. Stacy Adams, a workplace and behavioral psychologist, who asserted that employees seek to maintain equity between the inputs that they bring to a job and the outcomes that they receive from it against the perceived inputs and outcomes of others (Adams, 1963). According to Equity Theory, in order to maximize individuals' rewards, we tend to create systems where resources can be fairly divided amongst members of a group. Inequalities in relationships will cause those within it to be unhappy to a degree proportional to the amount of inequality.[2] The belief is that people value fair treatment which causes them to be motivated to keep the fairness maintained within the relationships of their co-workers and the organization. The structure of equity in the workplace is based on the ratio of inputs to outcomes. Inputs are the contributions made by the employee for the organization.


Equity theory focuses on determining whether the distribution of resources is fair to both relational partners.[3] It proposes that individuals who perceive themselves as either under-rewarded or over-rewarded will experience distress, and that this distress leads to efforts to restore equity within the relationship.[4] It focuses on determining whether the distribution of resources is fair to both relational partners.[5] Equity is measured by comparing the ratios of contributions and benefits of each person within the relationship.[citation needed] Partners do not have to receive equal benefits (such as receiving the same amount of love, care, and financial security) or make equal contributions (such as investing the same amount of effort, time, and financial resources),[citation needed] as long as the ratio between these benefits and contributions is similar. Much like other prevalent theories of motivation, such as Maslow’s hierarchy of needs, equity theory acknowledges that subtle and variable individual factors affect each person’s assessment and perception of their relationship with their relational partners (Guerrero et al., 2005).[citation needed] According to Adams (1965), anger is induced by underpayment inequity and guilt is induced with overpayment equity (Spector 2008). Payment whether hourly wage or salary, is the main concern and therefore the cause of equity or inequity in most cases.[citation needed]

In any position, an employee wants to feel that their contributions and work performance are being rewarded with their pay.[6] If an employee feels underpaid then it will result in the employee feeling hostile towards the organization and perhaps their co-workers, which may result in the employee not performing well at work anymore.[citation needed] It is the subtle variables that also play an important role in the feeling of equity. Just the idea of recognition for the job performance and the mere act of thanking the employee will cause a feeling of satisfaction and therefore help the employee feel worthwhile and have better outcomes.[citation needed]

Definition of equity[edit]

Individuals compare their job inputs and outcomes with those of others and then respond to eliminate any perceived inequities.[citation needed] Referent Comparisons:

Inputs and outcomes[edit]


Inputs are defined as each participant’s contributions to the relational exchange and are viewed as entitling him/her to rewards or costs.[citation needed] The inputs that a participant contributes to a relationship can be either assets – entitling him/her to rewards – or liabilities - entitling him/her to costs.[citation needed] The entitlement to rewards or costs ascribed to each input vary depending on the relational setting.[citation needed] In industrial settings, assets such as capital and manual labor are seen as "relevant inputs" – inputs that legitimately entitle the contributor to rewards. In social settings, assets such as physical beauty and kindness are generally seen as assets entitling the possessor to social rewards.[citation needed] Individual traits such as boorishness and cruelty are seen as liabilities entitling the possessor to costs (Walster, Traupmann & Walster, 1978).[citation needed] Inputs typically include any of the following:


Outputs are defined as the positive and negative consequences that an individual perceives a participant has incurred as a consequence of his/her relationship with another. When the ratio of inputs to outputs is close, then the employee should have much satisfaction with their job.[citation needed] Outputs can be both tangible and intangible.[7] Typical outputs include any of the following:


Equity theory consists of four propositions:

Individuals seek to maximize their outcomes (where outcomes are defined as rewards minus costs).[citation needed]
Groups can maximize collective rewards by developing accepted systems for equitably apportioning rewards and costs among members. Systems of equity will evolve within groups, and members will attempt to induce other members to accept and adhere to these systems. The only way groups can induce members to equitably behave is by making it more profitable to behave equitably than inequitably. Thus, groups will generally reward members who treat others equitably and generally punish (increase the cost for) members who treat others inequitably.[citation needed]
When individuals find themselves participating in inequitable relationships, they become distressed. The more inequitable the relationship, the more distress individuals feel. According to equity theory, both the person who gets "too much" and the person who gets "too little" feel distressed. The person who gets too much may feel guilt or shame. The person who gets too little may feel angry or humiliated.[citation needed]
Individuals who perceive that they are in an inequitable relationship attempt to eliminate their distress by restoring equity. The greater the inequity, the more distress people feel and the more they try to restore equity. (Walster, Traupmann and Walster, 1978)[citation needed]

In business[edit]

Equity theory has been widely applied to business settings by industrial psychologists to describe the relationship between an employee's motivation and his or her perception of equitable or inequitable treatment.[citation needed] In a business setting, the relevant dyadic relationship is that between employee and employer.[citation needed] As in marriage and other contractual dyadic relationships, equity theory assumes that employees seek to maintain an equitable ratio between the inputs they bring to the relationship and the outcomes they receive from it (Adams, 1965).[citation needed] Equity theory in business, however, introduces the concept of social comparison, whereby employees evaluate their own input/output ratios based on their comparison with the input/outcome ratios of other employees (Carrell and Dittrich, 1978).[citation needed] Inputs in this context include the employee’s time, expertise, qualifications, experience, intangible personal qualities such as drive and ambition, and interpersonal skills. Outcomes include monetary compensation, perquisites ("perks"), benefits, and flexible work arrangements.[citation needed] Employees who perceive inequity will seek to reduce it, either by distorting inputs and/or outcomes in their own minds ("cognitive distortion"), directly altering inputs and/or outcomes, or leaving the organization (Carrell and Dittrich, 1978). These perceptions of inequity are perceptions of organizational justice, or more specifically, injustice.[citation needed] Subsequently, the theory has wide-reaching implications for employee morale, efficiency, productivity, and turnover.[citation needed]

Assumptions of equity theory applied to business[edit]

The three primary assumptions applied to most business applications of equity theory can be summarized as follows:

  1. Employees expect a fair return for what they contribute to their jobs, a concept referred to as the "equity norm".[citation needed]
  2. Employees determine what their equitable return should be after comparing their inputs and outcomes with those of their coworkers. This concept is referred to as "social comparison".[citation needed]
  3. Employees who perceive themselves as being in an inequitable situation will seek to reduce the inequity either by distorting inputs and/or outcomes in their own minds ("cognitive distortion"), by directly altering inputs and/or outputs, or by leaving the organization. (Carrell and Dittrich, 1978)[8]

Implications for managers[edit]

Equity theory has several implications for business managers:

  • People measure the totals of their inputs and outcomes. This means a working mother may accept lower monetary compensation in return for more flexible working hours.[citation needed]
  • Different employees ascribe personal values to inputs and outcomes. Thus, two employees of equal experience and qualification performing the same work for the same pay may have quite different perceptions of the fairness of the deal.[citation needed]
  • Employees are able to adjust for purchasing power and local market conditions. Thus a teacher from Alberta may accept lower compensation than his colleague in Toronto if his cost of living is different, while a teacher in a remote African village may accept a totally different pay structure.[citation needed]
  • Although it may be acceptable for more senior staff to receive higher compensation, there are limits to the balance of the scales of equity and employees can find excessive executive pay demotivating.[citation needed]
  • Staff perceptions of inputs and outcomes of themselves and others may be incorrect, and perceptions need to be managed effectively.[citation needed]
  • An employee who believes he is overcompensated may increase his effort. However he may also adjust the values that he ascribes to his own personal inputs. It may be that he or she internalizes a sense of superiority and actually decrease his efforts.[citation needed]

Criticisms and related theories[edit]

Criticism has been directed toward both the assumptions and practical application of equity theory.[by whom?] Scholars have questioned the simplicity of the model, arguing that a number of demographic and psychological variables affect people's perceptions of fairness and interactions with others.[by whom?] Furthermore, much of the research supporting the basic propositions of equity theory has been conducted in laboratory settings, and thus has questionable applicability to real-world situations (Huseman, Hatfield & Miles, 1987).[citation needed] Critics have also argued that people might perceive equity/inequity not only in terms of the specific inputs and outcomes of a relationship, but also in terms of the overarching system that determines those inputs and outputs.[by whom?] Thus, in a business setting, one might feel that his or her compensation is equitable to other employees', but one might view the entire compensation system as unfair (Carrell and Dittrich, 1978).[citation needed]

Researchers have offered numerous magnifying and competing perspectives:

Equity sensitivity construct[edit]

The Equity Sensitivity Construct proposes that individuals have different preferences for equity and thus react in different ways to perceived equity and inequity.[citation needed] Preferences can be expressed on a continuum from preferences for extreme under-benefit to preferences for extreme over-benefit. Three archetypal classes are as follows:

  • Benevolent individuals, those who prefer their own input/outcome ratios to be less than those of their relational partner. In other words, the benevolent prefers to be under-benefited.[citation needed]
  • Equity Sensitives, those who prefer their own input/outcome ratios to be equal to those of their relational partner.[citation needed]
  • Entitled individuals, those who prefer their own input/outcome ratios to exceed those of their relational partner. In other words, the entitled prefers to be over-benefited. (Huseman, Hatfield & Miles, 1987)[citation needed]

Fairness model[edit]

The Fairness Model proposes an alternative measure of equity/inequity to the relational partner or "comparison person" of standard equity theory.[citation needed] According to the Fairness Model, an individual judges the overall "fairness" of a relationship by comparing their inputs and outcomes with an internally derived standard.[citation needed] The Fairness Model thus allows for the perceived equity/inequity of the overarching system to be incorporated into individuals' evaluations of their relationships (Carrell and Dittrich, 1978).[citation needed]

Game theory[edit]

Behavioral economics has recently started to apply game theory to the study of equity theory. For instance, Gill and Stone (2010) analyze how considerations of equity influence behavior in strategic settings in which people compete and develop the implications for optimal labor contracts.[citation needed]

See also[edit]


  1. ^ Guerrero, Laura K.; Peter A. Andersen & Walid A. Afifi. (2014). Close Encounters: Communication in Relationships, 4th Edition. Los Angeles, CA: Sage Publications Inc. p. 263. ISBN 978-1-4522-1710-9.
  2. ^ Adams, J.S. (1965). "Inequality in social exchange". Advanced Experimental Psychology. 62: 335–343.
  3. ^ "Equity Theory | Introduction to Business". courses.lumenlearning.com. Retrieved 2021-03-19.
  4. ^ "Process and Motivation | Boundless Management". courses.lumenlearning.com. Retrieved 2021-03-19.
  5. ^ "Process and Motivation | Boundless Management". courses.lumenlearning.com. Retrieved 2021-03-19.
  6. ^ "Reading: Equity Theory | Introduction to Business". courses.lumenlearning.com. Retrieved 2021-03-19.
  7. ^ Cook, ed. by Mark; Wilson, Glenn (1979). Love and attraction : an internat. conference (PDF) (1. ed.). Oxford [u. a.]: Pergamon Pr. pp. 309–323. ISBN 008022234X. Archived from the original (PDF) on 23 September 2015. Retrieved 3 June 2012.CS1 maint: extra text: authors list (link)
  8. ^ Carrell, Michael R.; Dittrich, John E. (1978). "Equity Theory: The Recent Literature, Methodological Considerations, and New Directions". Academy of Management Review. Academy of Management. 3 (2): 202–210. doi:10.5465/amr.1978.4294844.


  • Adams, J. S. (1963) Toward an understanding of inequity. Journal of Abnormal and Social Psychology, 67, 422-436
  • Gill, D, and Stone, R. (2010). Fairness and desert in tournaments. Games and Economic Behavior. 69: 346–364.
  • Guerrero, Andersen, and Afifi. (2007). Close Encounters: Communication in Relationships, 2nd edition. Sage Publications, Inc.
  • Huseman, R.C., Hatfield, J.D. & Miles, E.W. (1987). A New Perspective on Equity Theory: The Equity Sensitivity Construct. The Academy of Management Review. 12;2: 222-234.
  • Messick, D. & Cook, K. (1983). Equity theory: psychological and sociological perspectives. Praeger.
  • Sankey, C.D., (1999). Assessing the employment exchanges of Business Educators in Arizona. Unpublished doctoral dissertation, Arizona State University.
  • Spector, P.E. (2008). Industrial and Organizational Behavior (5th ed.). Wiley: Hoboken, NJ.
  • Traupmann, J. (1978). A longitudinal study of equity in intimate relationships. Unpublished doctoral dissertation, University of Wisconsin.
  • Walster, E., Walster G.W. & Bershcheid, E. (1978). Equity: Theory and Research. Allyn and Bacon, Inc.
  • Walster, E., Traupmann, J. & Walster, G.W. (1978). Equity and Extramarital Sexuality. Archives of Sexual Behavior. 7;2: 127-142.