have time on your hands

have time on (one's) hands

To have extra or spare time in which one has nothing specific to do or accomplish. I'll have a bit more time on my hands now that we've finished the year-end audit. Our kids had too much time on their hands on their summer break, so we decided to enroll them in a few different summer camps to keep them occupied.
See also: hand, have, on, time

have ˈtime on your hands

(informal) have more free time than you want or need: Now the children have left home, she’s got a lot more time on her hands. OPPOSITE: have your hands full
See also: hand, have, on, time