How Unequal Wages, Unfair Procedures and Discrimination Affect Labor Supply: Experimental Evidence

Last registered on November 24, 2020

Pre-Trial

Trial Information

General Information

Title
How Unequal Wages, Unfair Procedures and Discrimination Affect Labor Supply: Experimental Evidence
RCT ID
AEARCTR-0002655
Initial registration date
January 03, 2018

Initial registration date is when the trial was registered.

It corresponds to when the registration was submitted to the Registry to be reviewed for publication.

First published
January 03, 2018, 5:56 PM EST

First published corresponds to when the trial was first made public on the Registry after being reviewed.

Last updated
November 24, 2020, 8:36 AM EST

Last updated is the most recent time when changes to the trial's registration were published.

Locations

Region

Primary Investigator

Affiliation
Aarhus University

Other Primary Investigator(s)

PI Affiliation
Maastricht University
PI Affiliation
Maastricht University

Additional Trial Information

Status
Completed
Start date
2018-01-12
End date
2019-06-30
Secondary IDs
Abstract
We investigate the causal effect of wage inequality, unfair procedures, and (gender) discrimination on labor supply decisions of workers. We conduct an experiment in the laboratory and on an online platform, where workers individually engage in the same task and are individually paid a piece-rate wage. Workers receive information about their own wage and the wage of another worker as well as on the procedure leading to these wages. A worker’s labor supply decision only affects him- or herself. That is, providing less labor reduces the worker’s earnings but leaves unaffected the other workers’ earnings and the employer’s earnings.
External Link(s)

Registration Citation

Citation
Gagnon, Nickolas, Kristof Bosmans and Arno Riedl. 2020. "How Unequal Wages, Unfair Procedures and Discrimination Affect Labor Supply: Experimental Evidence." AEA RCT Registry. November 24. https://doi.org/10.1257/rct.2655-2.1
Former Citation
Gagnon, Nickolas, Kristof Bosmans and Arno Riedl. 2020. "How Unequal Wages, Unfair Procedures and Discrimination Affect Labor Supply: Experimental Evidence." AEA RCT Registry. November 24. https://www.socialscienceregistry.org/trials/2655/history/80277
Experimental Details

Interventions

Intervention(s)
See Pre-Analysis Plan.
Intervention Start Date
2018-01-12
Intervention End Date
2018-06-30

Primary Outcomes

Primary Outcomes (end points)
Labor supply. See Pre-Analysis Plan.
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
See Pre-Analysis Plan.
Experimental Design Details
Randomization Method
By computer. See Pre-Analysis Plan.
Randomization Unit
Individual. See Pre-Analysis Plan.
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
No clusters.
Sample size: planned number of observations
See Pre-Analysis Plan.
Sample size (or number of clusters) by treatment arms
Total of five treatments. See Pre-Analysis Plan.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB

Institutional Review Boards (IRBs)

IRB Name
Ethical Review Committee Inner City faculties (ERCIC)
IRB Approval Date
2017-11-23
IRB Approval Number
ERCIC_054_15_11_2017
Analysis Plan

Analysis Plan Documents

Pre-registration Document

MD5: eb1e9a4b5e9b2d72b7da2368c0d7ff08

SHA1: 459eb0b28759c9acee2ecc990c3a90c9f7bcc1f4

Uploaded At: January 03, 2018

Post-Trial

Post Trial Information

Study Withdrawal

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Intervention

Is the intervention completed?
No
Data Collection Complete
Yes
Data Collection Completion Date
Final Sample Size: Number of Clusters (Unit of Randomization)
Was attrition correlated with treatment status?
Final Sample Size: Total Number of Observations
Final Sample Size (or Number of Clusters) by Treatment Arms
Data Publication

Data Publication

Is public data available?
No

Program Files

Program Files
Reports, Papers & Other Materials

Relevant Paper(s)

Abstract
See link.
Citation
See link.

Reports & Other Materials