The term "owl job" is a slang term for working late into the night or early hours of the morning. If you're tired of using the same old phrase, there are several synonyms you can use. "Night owl work" is a similar phrase that emphasizes the time of day rather than the act of working long hours. "Burning the midnight oil" is a classic phrase that harkens back to the days before electricity when people would stay up late burning oil lamps. "Working the graveyard shift" is another common phrase that specifically refers to overnight work. Finally, "pulling an all-nighter" is a popular phrase that implies working for an entire night without sleep.