That kind of incentivizes automation. Robots don't go on strike.

EDIT: I remember an article on the Paris train strikes last year. Only the automated trains kept functioning:

https://www.lemonde.fr/en/france/article/2022/11/09/french-transport-strike-looks-set-to-severely-disrupt-paris_6003512_7.html

French labor unions have called a major one-day strike which threatens to paralyze Paris public transport on Thursday, November 10, the latest industrial action to demand relief from the French government over soaring prices.

The RATP transport operator for the capital has warned of particularly severe disruptions for metro and suburban rail lines, with bus and tram services also impacted by the protest for higher wages.

Seven metro lines will be fully closed and another seven will only operate at peak hours, RATP announced. Only lines 1 and 14 – which are fully automated with no drivers – will operate normally but risk becoming overcrowded, the RATP said.

I remember thinking that the train operator, not to mention users of the Paris transit system, are probably going to favor more automated lines over more human-manned ones after that.