What does 1 Kings 11:26 mean?

Jeroboam, son of Nebat, was another one who rebelled against the king. He was from Zeredah in Ephraim, and his mother was a widow named Zeruah. He worked for Solomon. 1 Kings 11:26 - Modern Text Bible

(Jeroboam was an Israelite from the tribe of Ephraim, and he started to oppose Solomon from within his own administration.)