Negligent Retention, Hostile Work Environment,

Can an employer be sued for negligent retention if the outcome was a hostile work environment where an employee was allowed to be continually yelled at in the workplace? This did not result in sexual harassment, injury, or apparent discrimination - though the "victim" is Asian and gay. The offender had several aggressive emails and encounters that were not addressed last summer. Then an openly hostile engagement that was not addressed. Then finally an email with profanity that was addressed but did not end in termination. Than continued agressiveness and yelling that was not addressed. Than a day later sent an intimidating email where the employee was finally terminated after giving resignation notice day before. In between the last yelling and the final email/term - the employer told the original victim that they needed to be put back into a scenario with the offender that would have put the victim in a situation where they continued to recieve harassment. This was after 2 counts of them saying they did not want to be involved with this person due to their behavior.