BA cross row goes to Europe
Nadia Eweida, 58, said she was making the move as she had "exhausted all legal avenues in the UK".
Ms Eweida, from Twickenham, south west London, said: "I have been given to understand that it will take four to six months before I hear whether my case will be accepted and heard."
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Hide AdThe case stems from BA's original uniform policy which prevented Ms Eweida from wearing her Christian cross silver chain around her neck at work.
She went home in September 2006 after failing to reach a compromise with managers over the wearing of the cross.
Later, BA changed its uniform policy and Ms Eweida returned to work in customer services.
An Employment Appeal Tribunal ruled in December 2008 that she was not a victim of religious discrimination.