"Related" means what? An unlawful discrimination case? Whistleblower? Or, if not, then I think you mean this:

https://www.irs.gov/publications/p529#en_US_2019_publink10004393

Which is "related to business" on Sched C or E or F, not as an employee. The TCJA changed it.

"You can deduct legal expenses that are related to doing or keeping your job, such as those you paid to defend yourself against criminal charges arising out of your trade or business.

You can deduct expenses of resolving tax issues relating to profit or loss from business (Schedule C), rentals or royalties (Schedule E), or farm income and expenses (Schedule F) on the appropriate schedule. Expenses for resolving nonbusiness tax issues are miscellaneous itemized deductions and are no longer deductible."

And here:

https://turbotax.intuit.com/tax-tips/tax-deductions-and-credits/can-i-deduct-legal-fees-on-my-taxes/...