Canada’s high court rules in favour of three B.C. medical workers who claimed they got breast cancer as a result of their jobs.

Katrina Hammer, Patricia Schmidt and Anne MacFarlane worked in a lab at Mission Memorial Hospital.

The Workers’ Compensation Board initially denied their applications for benefits on the grounds their cancers were not occupational diseases.

But Workers Compensation Administrative Tribunal in 2010 and 2011 overturned the decisions and linked the cancers to the workplace.

Then B.C. Court of Appeal rules the tribunal’s decision were unreasonable because there was no evidence their cancer was caused by the work environment.

Now the Supreme Court ruled for the women, saying while expert evidence may not have met a standard of scientific proof, it was enough to link their cancers and the workplace.