Week notice

The first is correct. In English, when a noun is used adjectively it is used in its singular form.

Peter is a car mechanic. (not cars)

I would say neither. Usually it's:

two weeks' notice. (if plural)

a week's notice. (if singular)

I forgot to say that you need a hyphen (two-week).

Hi Ivan,

Before pleasehelp's mind is in a total mess, let's try to settle this issue together.

You suggest that 'two-week' is an adjective preceding the noun 'notice'. I must say that I have rarely seen it used that way, while I often come across this expression written the way I wrote it above (with a genitive): two week's notice. For me, this is the most natural structu

Hi Michal

Two weeks' notice is correct and so is two-week notice. Some native speakers will sometimes say two weeks notice which is considered incorrect but here's the proof http://www.imdb.com/title/tt0313737/