In May 2015, Hiroki Inaba, vice president of Goldman Sachs Japan Co.'s legal department, came out as gay, after almost 13 years with the company and 10 years since the company established its LGBT Network, which was formed by staff to promote understanding of sexual minorities.

Although Goldman Sachs Japan has systems in place to provide training to its employees on diversity and inclusion, Inaba said it was also really the support of his boss, Naosuke Fujita, that encouraged him to come out.

"I came out to thank Fujita for all the efforts he had made," Inaba said.