Casual apparel retailer Westco has come under fire for allegedly forcing a female employee to wear a provocative T-shirt to work, the Australian Broadcasting Corporation has reported.

The unnamed employee from Victoria said she refused to wear the T-shirt, which bears the phrase 'Stop pretending you don't want me', and was sent home as a result.

According to the executive director of community legal centre Jobwatch, Zana Bytheway, the T-shirt's provocative slogan has already provoked unwanted attention towards Westco employees.

"It is against the law … in terms of the discrimination legislation and in terms of exposing employees to unnecessary risk," she said.

Westco management, however, told the Sydney Morning Herald that the T-shirt slogan was "a quirky statement reflecting the fact that Westco jeans products are pleasing, in demand, and difficult to resist."