BBC News - Christians take 'beliefs' fight to European Court of Human RightsFour British Christians who claim they lost their jobs as a result of discrimination against their beliefs are taking their cases to the European Court of Human Rights.
They include an airline worker stopped from wearing a cross and a registrar who did not want to marry gay couples.
All four lost separate employment tribunals relating to their beliefs.
Secular critics have said a ruling in favour of the group could "seriously undermine" UK equality law.
A ruling is not expected from the European court for several weeks.
The cases involve:
- Nadia Eweida, a Pentecostal Christian from Twickenham, south-west London, who was sent home by her employer British Airways in 2006 after refusing to remove a necklace with a cross
- Devon-based nurse Shirley Chaplin, who was moved to a desk job by Royal Devon and Exeter NHS Trust Hospital for similar reasons
- Gary McFarlane, a Bristol relationship counsellor, who was sacked by Relate after saying on a training course he might have had a conscientious objection to giving sex therapy advice to gay couples
- Registrar Lilian Ladele, who was disciplined after she refused to conduct same-sex civil partnership ceremonies in north London
Each individual had made a separate application to the court, but the cases are being heard together.
Miss Eweida's lawyer, James Dingemans, said her employer had permitted other religious symbols to be worn.
He said: "She was working alongside colleagues who were able to wear religious symbols and attire including the Sikh turban, the Sikh bracelet, the Muslim hijab, and the Jewish skull cap.