Economic Evaluation of Time¶
A psychological frame in which a person appraises uses of their time through monetary return or forgone earnings.
Core Idea¶
An economic evaluation of time is a psychological frame in which a person assesses uses of their own time in monetary terms: what an hour might earn, or what earnings another use would forgo. Pfeffer and DeVoe describe it as thinking of time primarily in monetary terms and treating it as a scarce resource to use efficiently.[1] The frame concerns a criterion in the person's appraisal. It is distinct from an outside analyst calculating the opportunity cost of that person's time.
An hourly-pay arrangement or a prompt to calculate an approximate wage can make the time–money connection salient, but neither is required for every instance. The frame also does not compel one particular decision. The cited experiments test short-term prompts, while comparisons of hourly and nonhourly workers also contain observed differences between jobs and people.[2][3] Those evidential limits matter when extending the account from paid work to choices about unpaid time.
Structural Signature¶
- Person allocating time — Someone considers alternative uses of finite personal time. Without that person's appraisal, a third party's cost estimate does not establish this psychological frame.
- Monetary criterion — Earnings, an implicit time rate, or forgone income becomes prominent in assessing those uses. This is the discriminating feature of the frame, rather than hourly employment itself.[1]
- Possible activating cue — A pay practice or wage-calculation prompt may draw attention to the monetary criterion. It is a common route, not a constitutive trigger.[2][3]
- Allocation setting — Paid work, volunteering, or leisure supplies a choice in which the criterion can affect preference or behavior. No specific choice or outcome is necessary.
- Evidence boundary — A stated preference, a one-day activity diary, and a directly measured decision criterion are different observables. Each study supports only the outcome it measured.[2][3]
The frame resides in monetary appraisal of time use. A cue can raise that appraisal's salience; an observed choice may be consistent with it. Neither the cue nor the choice alone proves the internal appraisal in an individual case.
What It Is Not¶
Not hourly pay itself. DP07 compared workers with and without hourly pay, but the pay arrangement was observed, not randomly assigned. In its third study, people with little prior hourly-pay exposure responded to a randomized wage-calculation prompt.[2] The frame can therefore be considered apart from a current hourly-paid job.
Not objective opportunity cost. An economist can calculate forgone wages for an hour of leisure even if the person deciding never thinks in those terms. The psychological claim needs evidence about the person's evaluative criterion, or a carefully bounded inference from a study designed to make it salient.
Not a rule that money always wins. Someone may evaluate an hour in monetary terms yet still choose to volunteer or rest. The frame changes what receives attention in a tradeoff; it is not a deterministic choice algorithm.
Not proof that time and money are fully interchangeable. The 2012 synthesis distinguishes their treatment and describes time as less fungible than money.[1] Applying a money rate does not turn a lost hour into recoverable cash.
Scope of Application¶
The account applies to human judgments about allocating time, especially where work practices make a monetary time rate noticeable. DP07's first study compared hourly and nonhourly workers' use of mental-accounting rules for time; its second used a national survey's hypothetical choice about working more hours for more earnings. Those are observational comparisons, not experiments that assigned people to pay systems.[2]
DP07's third study randomized an approximate-wage calculation and measured both economic-criteria salience and stated willingness to spend more time on paid work. The reported interaction depended on participants' observed prior hourly-pay exposure, and the paper's mediation analysis concerns that study's paid-work willingness outcome.[2] The volunteering paper supplies a distinct nonwork setting: its first study associated hourly status with volunteering recorded on one sampled diary day; its second randomized a wage-calculation prompt but measured stated willingness to volunteer, not subsequent activity.[3]
Pfeffer and DeVoe also theorize wider consequences of taking a monetary view of personal time, including different implications for instrumental and enjoyable activities.[1] Such proposals organize questions; they do not make every suggested well-being or social effect a defining or universally observed result. A distant cheaper fuel station, for example, is not a required instance or a load-bearing case in this entry.
Clarity¶
Ask four separate questions. Whose time is being judged? Is that person attending to monetary return or forgone earnings? What, if anything, made the rate salient? What was actually measured: the criterion, a stated preference, or behavior? The first two locate the construct. The last two prevent a pay arrangement or an experimental prompt from being mistaken for a direct reading of a person's mind.
The study design changes the answer. In DP07 Study 3, assignment to calculate an approximate wage was randomized, prior hourly-pay exposure was measured, and economic-criteria salience was separately recorded.[2] In the AMJ volunteering experiment, the calculation prompt was randomized and the reported outcome was willingness; the proposed internal monetary frame was the authors' interpretation, not a separately measured mediator in that study.[3]
Manages Complexity¶
The distinction between criterion, cue, and outcome compresses several superficially similar findings without erasing their differences. Hourly status, a momentary wage calculation, and an explicit statement that economic considerations matter are not interchangeable measures. A person may hold a salaried job and still think of time in money terms; another may receive an hourly wage and choose unpaid work.
Keeping the outcome typed is equally useful. DP07's paid-work choice was stated willingness in a hypothetical tradeoff. AMJ Study 1 used one sampled day of time-diary reports, including whether volunteering occurred and minutes spent. AMJ Study 2 used a stated willingness scale.[2][3] Those three observations can inform one theory, but they cannot be pooled into a single claim that a prompt changed later volunteering behavior.
Abstract Reasoning¶
Suppose a person must choose between an additional hour of paid work and an unpaid activity. The frame asks whether the money the hour could earn is salient in that person's appraisal. If a study only records an hourly-pay label and a choice, other job or person differences can still explain the association. If it randomizes a wage-rate calculation, it can test the prompt's effect on the measured outcome, while the job arrangement remains unrandomized.
DP07 Study 3 illustrates the narrower inference. Participants with little prior hourly-pay exposure who calculated an approximate rate reported greater willingness to spend more time on paid work; those with extensive exposure already reported relatively high willingness across conditions. Its statistical mediated-moderation analysis linked the prior-exposure-by-prompt interaction to willingness through measured economic-criteria salience.[2] That result does not supply a measured mediator for the separate volunteering study.
Knowledge Transfer¶
The same monetary appraisal can be asked about both paid and unpaid uses of time. In a paid-work scenario the visible question is whether to trade more hours for more earnings; in an unpaid-volunteering scenario the visible question is whether to give time without pay. DP07 measured stated paid-work willingness after a randomized calculation prompt, while AMJ Study 2 measured stated volunteering willingness after a related prompt.[2][3]
This is transfer within human time-allocation research, with different measured outcomes. A firm costing employee hours for its accounts is not thereby a person psychologically evaluating their own time. Nor does the analogy prove that every less-monetary activity is devalued whenever a wage rate is mentioned.
Examples¶
Canonical — paid-work tradeoff after a wage calculation¶
DP07 Study 3 asked employed participants to consider spending more time on paid work. An approximate-wage calculation was randomly assigned; prior hourly-pay exposure was observed, and economic-criteria salience was measured. The reported interaction showed that the prompt increased stated paid-work willingness particularly among people with little prior exposure. The authors' mediation analysis links that interaction to the measured salience in this study.[2]
Mapped back: person and time → employed respondent considering additional work; monetary criterion → attention to economic returns from time; optional cue → assigned wage calculation; allocation setting → more paid hours versus other time; evidence boundary → stated willingness and measured salience, with observed prior exposure.
Applied / In Practice — unpaid volunteering willingness¶
In the AMJ paper's second study, employed participants were randomly assigned either to calculate an approximate hourly wage or not. Among participants who were not paid by the hour, the calculation group stated less willingness to volunteer without remuneration; the study found no corresponding effect among hourly-paid participants. The prompt was intended to make an implicit price on time salient, but this study did not directly measure that mediator or observe later volunteering.[3]
Mapped back: person and time → employed respondent considering unpaid volunteer time; monetary criterion → the authors' proposed economic appraisal, not a direct mediator measure here; optional cue → assigned wage calculation; allocation setting → willingness to give time without pay; evidence boundary → stated willingness only, with hourly-pay status observed.
Structural Tensions¶
T1: Monetary comparability versus experiential value. A money rate offers one scale on which to compare time uses and makes forgone earnings visible. Enjoyable or relational time may have value that the rate does not express. Pfeffer and DeVoe theorize that economic evaluation can have different consequences where an activity is primarily instrumental rather than enjoyed for its own sake.[1] A solely monetary criterion simplifies comparison but can miss that other value; a nonmonetary criterion preserves it but may obscure an earnings tradeoff. Diagnostic: Which criterion is salient to the person, and what does the chosen rate leave out?
The papers also create an evidence-design limit, not a second structural tension: observed hourly pay, a randomized one-time prompt, diary behavior, and stated willingness answer different causal questions.[2][3] An association with a pay practice is not proof of the effect of changing a job, and a prompt's effect on stated willingness is not proof that later behavior changed.
Structural–Framed Character¶
Vocabulary travel: Time, value, and cost travel across economics and psychology, but the recognition test here concerns the actor's monetary appraisal. Evaluative weight: The term describes a frame rather than praising money-seeking or condemning paid work. Human-practice dependence: Wage systems and managerial routines can provide cues, while the object of study is human judgment.[1] Institutional origin: Hourly pay is an organizational practice, but no single pay scheme creates every instance. Import versus recognition: A researcher may introduce a wage calculation experimentally, or infer the frame cautiously from measured criteria and choices.[2]
Its character: partly structural as a relation between a person, a criterion, and competing uses of time, and partly framed by work practices and meanings of money. Neither an accounting identity nor a universal moral verdict captures that combination.
Structural Core vs. Domain Accent¶
What can lift: A cue can make one evaluative criterion more salient and alter a preference among alternatives. A future Prime comparison would need the same operational cue–criterion–choice relation in unlike nonmonetary substrates, with evidence that the criterion rather than merely the observed outcome changed. A superficial analogy about “putting a price on things” would not suffice.
What stays in the domain: The named frame evaluates a person's own time through money, forgone earnings, and paid or unpaid allocation. Its cited studies concern workers, wage calculations, and time-use judgments.[2][3][1] Removing that psychological time–money carrier leaves a broader framing question, not this domain-specific identity.
Instantiates / Related Primes¶
Opportunity Cost is a close comparison because an economic alternative can have forgone earnings. An opportunity-cost calculation, however, may be made by an outside analyst and need not be salient to the decision maker; this entry cannot inherit a strict parent merely from shared money vocabulary. Broader decision or framing entries also need their full signatures checked before any DAG relation is asserted.
The operative distinction is between objective alternatives and the person's criterion for evaluating them. This entry records the latter; the evidence supporting it remains tied to the measured prompts, appraisals, and outcomes in the cited studies.
Neighborhood in Abstraction Space¶
Economic Evaluation of Time sits in a sparse region of the domain-specific corpus (100th percentile for distinctiveness): few abstractions share its structure, so a faithful description tends to retrieve it precisely.
Family — Self-Perception Biases & Heuristics (22 abstractions)
Nearest neighbors
- Protected Self-Directed Time — 0.73
- Typical versus Maximum Performance — 0.72
- Barnum Effect — 0.72
- Denomination Effect — 0.72
- IKEA Effect — 0.72
Computed from structural-signature embeddings · 2026-10-17
Not to Be Confused With¶
- Opportunity cost: The value of a forgone alternative can be calculated without showing that the person used it as a psychological criterion.
- Hourly compensation: A pay arrangement that may provide a cue, not the frame itself.[2]
- Monetary valuation of every activity: Treating one hour in money terms does not show that time and money are fully fungible.[1]
- Volunteering behavior after a prompt: The AMJ prompt study measured stated willingness; its separate diary study recorded volunteering on one sampled day and did not randomize pay status.[3]
- A fixed dislike of leisure or social life: Neither a particular choice nor a universal well-being consequence defines the frame.
References¶
[1] Jeffrey Pfeffer and Sanford E. DeVoe, “The Economic Evaluation of Time: Organizational Causes and Individual Consequences,” Research in Organizational Behavior 32 (2012), 47–62, abstract at one-based PDF p. 2 / printed p. 47, definition repeated at PDF p. 3 / printed p. 48, and theory of personal consequences at printed pp. 55–59. Full author-hosted original synthesis: https://jeffreypfeffer.com/wp-content/uploads/2019/10/DeVoe_RIOB-Bhav-2012-7.pdf. registry ↩a ↩b ↩c ↩d ↩e ↩f ↩g ↩h
[2] Sanford E. DeVoe and Jeffrey Pfeffer, “When Time Is Money: The Effect of Hourly Payment on the Evaluation of Time,” Organizational Behavior and Human Decision Processes 104 (2007), 1–13, especially Studies 1–3 on article pp. 3–12 and Study 3 Table 4 and Figures 2–3. Full author-hosted original article: https://www-2.rotman.utoronto.ca/facbios/file/devoe%20and%20pfeffer%2C%20obhdp%2C%202007.pdf. registry ↩a ↩b ↩c ↩d ↩e ↩f ↩g ↩h ↩i ↩j ↩k ↩l ↩m ↩n ↩o
[3] Sanford E. DeVoe and Jeffrey Pfeffer, “Hourly Payment and Volunteering: The Effect of Organizational Practices on Decisions About Time Use,” Academy of Management Journal 50 (2007), 783–798, especially Study 1 printed pp. 785–791 and Study 2 printed pp. 791–795. Full author-hosted original article: https://jeffreypfeffer.com/wp-content/uploads/2019/10/AMJ-Aug2007-17.pdf. registry ↩a ↩b ↩c ↩d ↩e ↩f ↩g ↩h ↩i ↩j ↩k