The phrase "on own time" means to do something in one's free time, outside of work hours. Synonyms for this phrase include "off the clock," "off duty," "off hours," "out of work hours," and "outside of work time." All of these phrases refer to activities that are done outside of regular business hours, typically when an employee is not working and is free to do as they please. While it is important to maintain a work-life balance, some employees may choose to use their own time to further their professional development or pursue personal interests. Regardless of the reason, it is important to respect an individual's personal time and not encroach on their schedule.