Pedants, please come and sort out my apostrophes

[mangolassi]

I'm a bit confused about apostrophes to denote possession. Need to talk about an organisation (we'll call it X Y Service) and their work in a particular place (Zz).

1. X Y Service's work in Zz
2. XY Services' work in Zz
3. XY Services work in Zz.
4. Other (please specify)

[Lilymaid]

1 is correct if organisation is called XY Service and the word work is used as a noun (i.e. the work of XY Service)
If the organisation was called XY Services and the word "work" is used as a noun, the correct answer would be 2. (i.e. the work of XY Services)
If the organisation was called XY Services and the word "work" is used as a verb, the correct phrase would be "XY Services works in Zz" as "XY Services" is still singular despite the word Services being a plural.

1. If the organisation was called XY Service and the word "work" is used as a verb, you would then say "XY Service works in Zz".

Does that cover all possibilities and leave the OP totally confused?

[mangolassi]

Ok, the organisation is Service singular. Work is being used as a noun. So Number 1. Thanks