Workplace promotion is withheld from a woman based solely on gender
This argument applies a generalised assumption about all men and all women ('men are more reliable') to make a specific employment decision about an individual woman. It is a hasty generalisation because it draws conclusions about an individual from a group stereotype without any evidence about that individual's actual performance or reliability. It also assumes client perceptions based on gender, which is itself a form of systemic gender bias the law requires employers to actively address.
They say: 'You are excellent at your job, but our clients prefer male account managers — it is not personal.' You respond by: Naming the Employment Equity Act prohibition on gender discrimination in promotion, and noting that client preferences based on gender do not create a lawful basis for withholding your promotion.
After you give your response, they may push back. Here is how to handle each counter-argument.