How Unequal Wages, Unfair Procedures and Discrimination Affect Labor Supply: Experimental Evidence
Last registered on January 16, 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
Last updated
January 16, 2020 8:58 AM EST
Location(s)
Region
Primary Investigator
Affiliation
Maastricht 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
Bosmans, Kristof, Nickolas Gagnon and Arno Riedl. 2020. "How Unequal Wages, Unfair Procedures and Discrimination Affect Labor Supply: Experimental Evidence." AEA RCT Registry. January 16. https://doi.org/10.1257/rct.2655-1.1.
Former Citation
Bosmans, Kristof et al. 2020. "How Unequal Wages, Unfair Procedures and Discrimination Affect Labor Supply: Experimental Evidence." AEA RCT Registry. January 16. https://www.socialscienceregistry.org/trials/2655/history/60708.
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
Intervention
Is the intervention completed?
No
Is data collection complete?
Data Publication
Data Publication
Is public data available?
No
Program Files
Program Files
Reports and Papers
Preliminary Reports
Relevant Papers