Pregnant women with severe morning sickness could have a stronger claim to flexible work arrangements after a Victorian tribunal ruled the condition was a "disability".

A pregnant Melbourne phone shop worker launched a civil lawsuit against her employers at a store in Watergardens, alleging they discriminated against her in 2013 for being pregnant and failed to make "reasonable adjustments" to accommodate her disability.

Employers have been told to treat severe morning sickness as a disability.

She claimed her employers' actions relating to sick leave, lifting boxes, sitting during work hours and toilet breaks amounted to discrimination.

The woman was diagnosed with having Hyperemesis Gravidarum – a severe form of morning sickness – in September 2013.