No it doesn't need to be hyphenated.
"Field" is not hyphenated.
Yes it should be hyphenated.
No it shouldn't be hyphenated.
It should be hyphenated.
No it shouldn't be hyphenated. It is one word.
Yes it should be hyphenated.
It should be hyphenated.
It should be hyphenated.
No it's not hyphenated: biweekly.
Yes, open-ended should be hyphenated
The second word should not be capitalized
No it shouldn't be.