Well try telling that to Nicola Thorp who turned up for her first day temping at PricewaterhouseCoopers to be told that she should be wearing a heel between 2 and 4 inches in height.
She refused, making the comment that this rule did not apply to her male colleagues and was sent home... without pay.
Speaking to BBC Radio London, Thorp said 'I said "if you can give me a reason as to why wearing flats would impair me to do my job today, then fair enough", but they couldn't'.
Speaking to friends about it, and posting on Facebook, she realised that other women face this double-standard in the workplace.
"I was a bit scared about speaking up about it in case there was a negative backlash," she said. "But I realised I needed to put a voice to this as it is a much bigger issue."
She set up a petition calling for the law to be changed so women cannot be forced to wear high heels to work.
In 6 months it had more than 150,000 signatures, forcing a government response.