Does Climate Change impact the gender gap in wage negotiations?

Last registered on January 19, 2024


Trial Information

General Information

Does Climate Change impact the gender gap in wage negotiations?
Initial registration date
November 15, 2023

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 19, 2024, 2:25 PM EST

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



Primary Investigator

CUNY Queens College

Other Primary Investigator(s)

PI Affiliation
University of Arkansas

Additional Trial Information

In development
Start date
End date
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
We conducted a lab-in-the-field experiment in Colombia to study how climate change may influence gender differences in the negotiation of wages. Workers negotiate their wages before working on a real-effort task. We introduce climate change by taking advantage of the presence of El Nino from 2023 to 2025, which harms agriculture in the Altiplano region of Los Andes, Colombia. In addition, we vary the degree of employability in the area: workers negotiate wages during high and low seasons for tourism (employability). We introduce two negotiation treatments by varying who offers the initial wage offer, the worker (forced negotiation) or the employer (choice negotiation). We examine how introducing different types of negotiation and using the negative impacts of El Nino affect the gender gap and workers’ productivity and its changes over different times of employability.
External Link(s)

Registration Citation

Candelo Londono, Natalia and Sherry Li. 2024. "Does Climate Change impact the gender gap in wage negotiations? ." AEA RCT Registry. January 19.
Experimental Details


Specifically, the negative impact of El Nino from 2023 to 2025 on labor market outcomes (wages). These labor markets are also affected by seasonality.
Intervention Start Date
Intervention End Date

Primary Outcomes

Primary Outcomes (end points)
Individual worker negotiated prices, individual worker negotiated productivity in the real-effort task
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
In this study, the focus is on how workers negotiate their payoffs. The workers negotiate a fixed portion of their pay before putting in effort to complete a task. The study aims to investigate the impact of climate change on workers' negotiation wage outcomes and productivity. Specifically, the negative impact of El Nino from 2023 to 2025 and the different levels of employability in different tourist seasons in the region will be taken into account. The study employs a between-subjects design and varies negotiation structures by informing workers if they can make the first offer. The aim is to examine how workers' negotiated wages, productivity, and changes over time vary across treatments in response to the possibility of negotiation structures and climate change.

Experimental Design Details
1. Recruitment
We are conducting a lab-in-the-field experiment in Boyaca, Colombia, which involves recruiting workers aged between 18 to 65 years old from local companies such as hotels, restaurants, tourist stores, farms, wineries, etc. The workers are invited to participate in our study.

2. Real Effort Task
Our primary research focus is on the negotiation ability of workers with respect to their wages and productivity. We examine how the negotiated wages and productivity change over time in the real-effort task. Our real-effort task design is similar to that of Brown et al. (2017). During the experiment, each worker is given a large bag containing 1000 blue, 1000 red, and 1000 yellow bingo chips. They must sort the chips into three different bowls assigned to each color for fifteen minutes. Before starting the task, the workers negotiate their wages with the researcher. They receive a fixed wage that is negotiated before exerting effort in the task.

3. Treatments
Our experiment employs a between-subjects design and involves two treatments, excluding the Baseline. In the Baseline (No Negotiation), workers receive a fixed payment of $5 for their productivity and an additional variable payment of $0.02 for every sorted chip. In the treatment with forced negotiation (hereafter called Forced), individual workers are given the opportunity to name their price for their 15-minute work, and the researcher provides a counteroffer based on the named value. The researcher (i.e. the "employer") offers workers the chance to name their price first (i.e. "the first offer") in this treatment. Conversely, in the other treatment, called Choice, the researcher gives the initial offer. In the treatment with choice, individual workers hear the initial offer for the 15-minute work, and they can respond with a counteroffer based on the value.

When implementing the forced negotiation treatment, some individual workers may not wish to provide the initial offer themselves, and may instead request the researcher to provide it for them regarding the 15-minute work. In such instances, the forced treatment automatically becomes the choice treatment method. Thus, this endogenous ‘treatment’ will be called E_choice.

In each treatment (except the baseline), the negotiation structure allows for three stages of negotiation (two counteroffers from the worker). The two treatments will happen simultaneously with and without El Nino, creating four treatments.

The lab-in-the-field study aims to answer the following research questions:
- Do workers negotiate wages differently in regions impacted by climate change?
- Does climate change affect the gender wage gap in negotiations?
- Does productivity decrease when climate change hits the region where workers reside?
- Are there differences in negotiation strategies between male and female workers when climate change impacts their region?
- Do gender-based beliefs play a significant role in wage negotiations during climate change stressors?
- Can different negotiation structures impact the gender wage gap in the face of climate change?

Experimental Design Details
Not available
Randomization Method
Randomization is done by a computer.
Randomization Unit
Individual workers
Was the treatment clustered?

Experiment Characteristics

Sample size: planned number of clusters
Sample size: planned number of observations
500 observations
Sample size (or number of clusters) by treatment arms
At least 40 observations per treatment.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)

Institutional Review Boards (IRBs)

IRB Name
CUNY Queens College
IRB Approval Date
IRB Approval Number
IRB Name
CUNY Queens College
IRB Approval Date
IRB Approval Number