Sources for the charts, via reverse image search:

https://www.researchgate.net/figure/Average-working-hours-ac...

https://www.epi.org/publication/as-union-membership-has-fall...

https://www.bls.gov/wsp/factsheets/summary-of-work-stoppages...

https://justicepolicy.org/wp-content/uploads/justicepolicy/d...