I have made numerous complaints to my immediate supervisor against two employees who were bullying me. Recently, my supervisor was replaced. The new supervisor has simply shrugged of my workplace bullying complaints and recently have called me in to explain my alleged underperformance as the bullies have now got into her good books. I have resigned and lodged a bullying claim with the H.R. Department. I have also put in a Workcover Injury Claim directly with VWA because the employer had refused to accept my injury claim. I recently found out that instead of spending time and energy to investigate my complaint, the H.R. Department has been contacting my referees ( the referees that I used when I first applied for this job ) to investigate my previous work. Is it ok for an employer ( in this case my ex employer ) to do this?