Lawyers plan to ask a federal judge Monday to approve as much as $150 million in fees tied to settlements with Juul Labs Inc. over the vaping epidemic.

The fee award, according to a partially redacted filing from a fee committee on Wednesday, is more than $50 million short of the compensation from nearly 368,000 billable hours incurred in the litigation, which began three years ago, and a rough estimate given that the total value of the Juul settlements remains unknown.