Though J&J is one of the country's largest drugmakers, the lawsuit argues, it failed to use its buying power when purchasing medications to negotiate the best prices for medicines for workers on its health plan.

55% of employees who requested a leave of absence said it was in order to manage mental-health related issues – more than any other factor including injury and illness.

The drug, MariTide, helped patients lose up to 14.5% of their body weight in 12 weeks, and some people kept the weight off for up to 150 days after stopping the drug.