Hyphenate it only if it's being used to modify another noun. You can turn in a last-minute paper at the last minute.

Should one minute be hyphenated?

An easy rule of thumb in most cases is that it's not necessary to hyphenate when the word "minute" ends in "s." For example, you wouldn't put a hyphen before "minutes" in the sentence "Joey showered for 15 minutes." However, it is correct to hyphenate in this case: "Joey took a 15-minute shower." Let the presence or ...

Does ten minute need a hyphen?

This applies whether the number is written in words or in digits. The president of the company gave a 10-minute speech to the Board of Directors. ... However, a hyphen is not required if the number is the second word in the compound adjective.