Electronic cigarette maker Apple is facing a huge drop in sales in the U.S. amid reports that the company is being sued by a former employee who says the company failed to protect him from death threats.

The Wall Street Journal reported on Monday that a former Apple employee, Scott Kacsmar, filed a federal lawsuit in San Jose, California, accusing the company of failing to protect its employees from retaliation.

The suit alleges that the iPhone maker was aware of a potential workplace injury and failed to take immediate action to prevent it.

Apple did not immediately respond to a request for comment on the lawsuit.

“The suit was filed last week in a federal court in San Francisco by an ex-employee of Apple, Scott.

The lawsuit alleges that Apple failed to prevent the potential harm from happening,” The Wall St Journal reported.

“It is not clear if Apple has a response to the suit.

It is also unclear if Kacsmars claim of retaliation will be investigated,” the Journal added.

Apple was not immediately available for comment.

The allegations are the latest in a string of lawsuits filed against the smartphone maker over the past two years.

Apple, the largest smartphone manufacturer in the world, has been embroiled in a series of lawsuits over its policies toward workers.

The company was sued for wage theft, sexual harassment, and the death of an employee who died of a heart attack.

The lawsuits have been consolidated with a class action filed by more than 100 former and current employees, many of whom have filed claims against Apple.

The former employees are seeking to prevent Apple from having to pay damages to the survivors of the deaths.

The new lawsuit alleges similar claims against the company over its alleged mishandling of the death, but it is unclear if Apple’s lawsuit is related to Kacsmaars claims.

The Associated Press contributed to this report.