Improving Job Safety: The Impact of Providing Information to Firms and Workers in Chile

Last registered on September 01, 2014

Pre-Trial

Trial Information

General Information

Title
Improving Job Safety: The Impact of Providing Information to Firms and Workers in Chile
RCT ID
AEARCTR-0000498
Initial registration date
September 01, 2014

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
September 01, 2014, 11:43 AM EDT

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

Last updated
September 01, 2014, 11:44 AM EDT

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

Locations

Primary Investigator

Affiliation
Pontificia Universidad Catolica de Chile

Other Primary Investigator(s)

PI Affiliation
PI Affiliation

Additional Trial Information

Status
On going
Start date
2013-03-01
End date
2014-12-31
Secondary IDs
Abstract
This trial measures the impact of the delivery of information about accidentability to SMEs in their implementation of labor security practices, participation in trainings and their accidentability rates. Four different treatments were applied which differ in the kind of information given, the way it is delivered and to whom it is directed (entrepreneurs, security managers or directly to the workers). The enterprises in the experiment are part of the SME Program of the Chilean Security Association (ACHS) and they had all been visited by the ACHS´s expert the month before de intervention.
External Link(s)

Registration Citation

Citation
Brahm, Francisco, Jeanne Lafortune and José Tessada. 2014. "Improving Job Safety: The Impact of Providing Information to Firms and Workers in Chile." AEA RCT Registry. September 01. https://doi.org/10.1257/rct.498-2.0
Former Citation
Brahm, Francisco, Jeanne Lafortune and José Tessada. 2014. "Improving Job Safety: The Impact of Providing Information to Firms and Workers in Chile." AEA RCT Registry. September 01. https://www.socialscienceregistry.org/trials/498/history/2669
Sponsors & Partners

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Experimental Details

Interventions

Intervention(s)
The desing included two randomizarions. The first one was performed between april and october, and focused on delivering the information to the person in charge of the enterprise by e-mail with three different contents:
Treatment 1: simplified version of the ACHS plan of action
Treatment 2: comparative information of the accidentability rate of the enterprise related to this rate in the SMEs of the same sector.
Treatment 3: information and consciousness about the costs implied in labor accidents.
Treatment 4: sent printed material to be given out to the workers and used as a poster
Intervention Start Date
2013-03-01
Intervention End Date
2013-12-31

Primary Outcomes

Primary Outcomes (end points)
Accidentability rate 2 months after sending the e-mail
Accidentability rate 6 months after sending the e-mail
Training courses in labor security during 2013
Accomplishment of legal requirements
Average wages of workers
Workers characteristics
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
The design included two stages. On the first one, the enterprises were selected for receiving one of the four kinds of e-mail information or to control group. On a second ocassion, the were assigned to receiving physicall mail or not receiving it.
Experimental Design Details
Randomization Method
Computer system.
Randomization Unit
Enterprises.
Was the treatment clustered?
Yes

Experiment Characteristics

Sample size: planned number of clusters
Regions and industries.
Sample size: planned number of observations
31.500 enterprises
Sample size (or number of clusters) by treatment arms
First randomization:
Treatment 1: 2.000 enterprises
Treatment 1: 3.500 enterprises
Treatment 1: 3.500 enterprises
Control: 3.500 enterprises
Second randomization
Treatment 4: 5.000 enterprises
Control: 5.000 enterprises
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
First randomization (e-mails) Accidentability rate: 0,71% Percentage: 12,95% Completing training courses: 1,74% Percentage: 26,33% Legal plan accomplishment:1,72% Percentage: 2,35% Second randomization (printed material) Accidentability rate: 0,65% Percentage: 11,88% Completing training courses: 1,59% Percentage: 24,16% Legal plan accomplishment:1,58% Percentage: 2,15%
IRB

Institutional Review Boards (IRBs)

Post-Trial

Post Trial Information

Study Withdrawal

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Intervention

Is the intervention completed?
No
Data Collection Complete
Data Publication

Data Publication

Is public data available?
No

Program Files

Program Files
Reports, Papers & Other Materials

Relevant Paper(s)

Reports & Other Materials