Some state involvement from that end of things seems appropriate.
Obviously it goes without saying that those who are genuinely forced into any kind of work, be it sex work, domestic work or some other form of forced labour, should be afforded all assistance and those who instigate forced labour should be severely punished.
I'm for legalisation of prostitution but I would restrict a permit to a geographical area. I think there is a big problem with people being moved around. The Gardai and concerned agencies should know who is working as a prostitute in an area. That way their welfare can be protected.
If you believe that sexual relations should only take place in the context of marriage, it follow that you believe that sex should never be for sale. Its fine to believe that. While you are entitled to act according to your beliefs, you most certainly are not entitled to force your beliefs on other people. Legislation on sexual mores between people capable of consenting is generally a bad thing.
Just decided to read the following:
I've never studied law but found it an easy enough read (I'm on page 27).Discussion Document on Future Direction of Prostitution Legislation (Size - 329KB)
It seems reasonably balanced although I don't know the area at all so may be missing things?
I have found it interesting to learn about the different policies in different countries, both decriminalisation in some countries and then the Swedish Model approach, which is critiqued a little.