Employees at Mack Trucks recently went on strike. The impact of that strike has trickled down to workers at Volvo Trucks North America, as Volvo laid off 3,000 employees due to a lack of engines and transmissions from a Maryland plant that Mack Trucks and Volvo Trucks North America share. The layoffs are temporary, but will still have a severe economic impact on many. The example of Volvo workers conveys the effect that striking auto workers can have on second tier suppliers.
See "Volvo Trucks will lay off 3,000 workers because of UAW strike at Mack Trucks", Alan Adler, Freight Waves, October 18, 2019