#### Role of erosion of unions on wage inequality, 1979–2017

Inequality measure | Change in measure | Percent of change in measure explained by erosion of unions* |
---|---|---|

Men | ||

90/10 wage gap | 0.32 | 27.3% |

90/50 wage gap | 0.33 | 37.3% |

50/10 wage gap | -0.01 | – |

Standard deviation (log wages) | 0.12 | 28.8% |

Gini coefficient | 0.08 | 36.7% |

Women | ||

90/10 wage gap | 0.49 | 4.3% |

90/50 wage gap | 0.28 | 13.0% |

50/10 wage gap | 0.21 | -6.6% |

Standard deviation (log wages) | 0.16 | 6.7% |

Gini coefficient | 0.10 | 8.8% |

* Direct and spillover effect

**Note: **The wage gaps represent the difference between wages of workers at different percentiles in the wage distribution, where the 50th percentile worker is the median worker.

**Source:** Analysis of Fortin, Lemieux, and Lloyd 2021.