The small-town culture of Northern Territory workplaces may prevent women from reporting cases of sexual harassment, according to an anti-discrimination commissioner Sally Sievers.

Sievers says workplaces are supposed to have a robust, confidential complaint process to report sexual harassment, but in smaller places like NT, many people do not know the process exists.

Seivers also says many women who initially said they had not been sexually harassed would realise they had been after outlining what constituted sexual harassment.