1. On the job
   "had been at work for over an hour before her boss arrived"

See also: busy

• rock-inhabiting
• rock-loving
• rock-ribbed
• rock-steady
• rockabilly
• rockbound
• rockchuck
• rockcress
• Rockefeller
• rocker
• rocker arm
• rockers
• rockery
• rocket
• rocket base
• rocket cress
• rocket engine
• rocket engineer
• rocket firing
• rocket fuel
• rocket larkspur
• rocket launcher
• rocket launching
• rocket propellant
• rocket propellent