The key is getting enough people to file lawsuits at the same time. IBM ended up settling out of court with bunch of older workers over age discrimination. Because a ton of workers sued and they eventually figured out it would be cheaper to settle most of them.
I'm petty enough to do something like this out of spite alone and wouldn't care if I lost money.
While accused of already breaking terms of an earlier deal
www.theregister.com
IBM is preparing to settle yet more age discrimination and wage theft complaints against the IT giant, though in one instance where it has already done so, Big Blue is accused of failing to comply with the terms of its settlement agreement.
Back in 2018, IBM was in the headlines, accused of deliberately trying to get rid of older workers and replace them with younger Millennials.