Religious equality in Germany on one hand falls under state law and on the other, under the church's internal rules.
The Constitution (GG) and the General Equal Treatment Act (AGG) are a part of the federal regulatory system. The Constitution regulates the relationship between citizens and the state and certifies the right to equal treatment together with the right of protection from state intervention. Parallel to such rights, the Constitution guarantees the churchesself-determination. The AGG governs the relationship amongst individuals and prohibits discrimination based on religion or belief.
Because of their self-determination, the Christian churches can organise and administer their affairs independently within the limits of applicable laws. Therefore, they have adopted internal church guidelines.