Employers are "vicariously liable" for any discriminatory behaviour exhibited by their staff, it has been suggested.
According to people management consultant Jean Kelly, organisations must train their managers to combat discrimination, harassment and bullying.
She said: "It is very important to train and advise all managers regarding their responsibilities in relation to discrimination in the workplace."
The expert added that managers must challenge discriminatory behaviour.
In other discrimination news, a test case initiated by charity Age Concern earlier this year - which challenged rules that permit UK employers to compel workers to give up their roles at the age of 65 - was recently dealt a blow.
An advocate general at the European Court of Justice supported the rules, stating that such discrimination can be justified in the context of national law.
Although the opinion of the advisor is not legally binding, it is followed by EU judges in around eight in ten cases.
Meanwhile, a final judgement concerning the issue is due to be made in around six months time.