A Sydney woman says there are only two things standing between her and employment: her 12HH breasts.

Nim Murphy, 27, said her large breasts meant she could not find a job and had to rely on welfare.

"I can't work, I can't exercise properly, I can't do most things," Ms Murphy told A Current Affair .

"I don't want to be on the dole and not doing anything."

Ms Murphy used to work as a roadie performing physical labour at music shows and festivals.

In recent years, the pain has become so extreme that she can't physically hold down a job.

She also suffers from a reversal of the lordotic curvature.

"Instead of curving forwards, my spine curves back in my neck - which isn't directly caused by the weight of breasts or anything, but they exacerbate the symptoms that come from it," Mr Murphy said.

"I get migraines, I've got constant shoulder and neck pain."

"About two and a half years ago I had to call in sick because I got out the front door and started vomiting in my front yard just from the pain and so I had to stop working."

Ms Murphy is desperate for breast reduction surgery, but her present financial state and lack of private health insurance are standing in her way.

Ms Murphy, 27, says she is unable to do most things as a result of her large breasts (Source: A Current Affair)

While there is no question of it being a medical condition and not a cosmetic one, Ms Murphy's case is not considered a high enough priority and she will have to join a waiting list for years to undergo the surgery under the public health system.

Plastic surgeon and secretary of the Australian Society of Plastic Surgeons, Dr Dan Kennedy, says a recent study which followed 200 women after breast reduction surgery and showed a huge improvement in their overall health and wellbeing a year after the operation.

"I think breast reduction is the best operation that I do," Dr Kennedy said.

The former roadie was unable to keep up with the physical demands of her job as a result of her large bust and a spinal problem (Source: A Current Affair)