How long do I have to sue over oral contract in Pennsylvania?
Answered for: Pennsylvania
(3) An action upon an express contract not founded upon an instrument in writing.
The statute states 4 years for oral contract. When that clock starts, and whether it can be paused, are separate questions this entry does not answer.
This answer is true in Pennsylvania and nowhere else on this site. Another jurisdiction is another answer, or an honest gap: see what has been read for Pennsylvania.