SINGAPORE — PropertyLimBrothers (PLB) is tightening governance after a leadership controversy that triggered widespread online speculation about the company's senior executives.The real estate agency will introduce a formal code of conduct, which could include rules on workplace relationships, professional behaviour and dress codes.The aim is to strengthen accountability and create a safer working environment, said PLB co-founder Adrian Lim in an exclusive interview with The Straits Times on March 9.The agency has also launched a whistle-blowing channel for property agents and other employees to raise their concerns anonymously. Serious breaches could result in disciplinary action, including termination, Mr Lim said.PLB was thrust into the spotlight in late January following allegations about an extramarital affair between the firm's second co-founder and former chief executive Melvin Lim and Ms Grayce Tan, who was then vice-president of strategy. Read more