One of King Solomon's unwise policies was the use of forced labor to build the house of God. According to the Bible, he conscripted 30,000 men from Israel, and sent them to Lebanon in shifts of 10,000 a month to work on the temple and palace construction projects. This policy was unpopular and oppressive, leading to resentment among the people and the eventual split of the kingdom after his death. Therefore, the use of forced labor can be seen as an unwise decision by King Solomon.