Simulations of reforms to employer contributions from the "Bozio-Wasmer" report

This directory contains all the programs used to simulate the reforms presented in the "Bozio-Wasmer" report and their outcomes.

Full documentation is available here

Objectives

This package is built to quantify different outcomes of employer contributions :

• Empirically :
  • To quantify budget costs (static and "first-round" after application of the employment effects) associated with each reform
  • To estimate employment effects of the reform
• Theoretically :
  • To estimate incentives to increase wages
  • To estimate the impact of adding the "prime de partage de la valeur" to the basis for reducing contributions

Organization

The repository is organized as follow :

• the data folder contains the data used in the simulations:
  • the inventory of Rural Revitalization Zones (ZRR)
  • the inventory of Zones de Restructuration de la Défense (ZRD)
  • distributions of individuals by salary bracket
• the docs folder contains all the package documentation and assumptions underlying the simulation model
• the logs folder contains the logging files associated with the simulators
• the notebooks folder contains illustrative notebooks for reproducing report results
• the outputs folder contains program outputs.
• the parameters folder contains default simulation parameters.
• the scripts folder contains a script for running simulations of current contributions and reductions, and of the reform scenarios listed in the config.yaml file at the root.

Installation

Package and dependencies

git clone https://github.com/IGF-PSD/igf_toolbox.git
pip install -e igf_toolbox

git clone https://github.com/IGF-PSD/bozio_wasmer_simulations.git
pip install -e bozio_wasmer_simulations

The package is then usable as any other python package.

Parametrisation

File in the config.yaml file :

CASD :
  PROJET : "INGENFI"

Documentation

To visualize the documentation :

pip install mkdocs mkdocs-material mkdocstrings-python python-markdown-math

mkdocs build --port 5000

Usage

Here's an example of how to use the functions in the package:

from bozio_wasmer_simulations import CaptationMarginaleSimulator

# Create a simulator object
simulator = CaptationMarginaleSimulator()

# Define a dictionary of reform parameters
reform_params = {
    'TYPE': 'fillon',
    'PARAMS': {
        'PLAFOND': 2.7,
        'TAUX_50_SALARIES_ET_PLUS': 0.35,
        'TAUX_MOINS_DE_50_SALARIES': 0.354
    }
}

# Simulate a reform
data_simul = simulator.simulate_reform(name='my_reform', reform_params=reform_params, year=2022, simulation_step_smic=0.1, simulation_max_smic=4)

Warnings ⚠️

Salary rates are not observed but are derived from data recorded in DSN ("Déclarations Sociales Nominatives"), from wages and amount of paid work hours. The quality of the latter is sometimes low, which can lead to some postprocessing.

License

The package is licensed under the MIT License.