Is this incorrect?

[Unregistered]

I was told that the following sentence is incorrect because in order for a comma to come after a prepositional phrase, there needs to be 5 words in the prepositional phrase.

Under the new legislation, a tax credit was given to students under the age of twenty-five and those earning less than the minimum poverty level wage.

Is this true? It seems to make more sense WITH the comma.

 

[savedhamlet554]

I don't know of any 5 word rule. I think it is right with or without the comma.

Just keep in mind with English that the most important comma rule there is goes: IF IN DOUBT LEAVE IT OUT!;-)