Here is a quick summary of the case regarding the Christian registrar:
Marriage registrar Lillian Ladele worked for Islington Borough Council in London. When civil partnerships were legalised in 2004, Miss Ladele refused to conduct them, saying it was against her religious beliefs.
In December 2007, the local authority changed the rules governing their registrar’s working conditions.
Miss Ladele went from effectively working on a freelance basis, which allowed her to swap civil partnership ceremonies with colleagues, to a system which granted her far less flexibility.
Miss Ladele argued she was being forced by the north London council to chose between her religious beliefs and her job. She claimed she was shunned and accused of being homophobic for refusing to carry out the ceremonies.
In July 2008, an employment tribunal ruled in Miss Ladele’s favour, agreeing that she had been harassed.
At the time, Miss Ladele hailed the decision as a “victory for religious liberty”.
But in December that year the Employment Appeal Tribunal reversed the ruling, and it was upheld for a second time by the Court of Appeal in 2009.
The Supreme Court refused to allow Miss Ladele to appeal again, prompting her decision to consider taking her case to the European Court of Human Rights.
But the European judges rejected her action in January 2013.
So, if I understand correctly, when she was a free-lance employee she was allowed to pass along civil union responsibilities to other employees. But when she became a regular employee she was no longer allowed to do so.