1. while working.

Glass is always checking his workers to be sure they're wearing hard-hats on the job.

2. ready and able to work.

Just put the CD into the slot, click "Install" and the program will install itself and then let your PC know it's on the job.

• come one, come all
• come on like gangbusters
• come on strong
• come on to
• come on to someone
• come out
• come out fighting
• come out in the wash
• come out of shell
• come out of the closet
• come out of the woodwork
• come out of your shell
• come out smelling of roses
• come out swinging
• come over
• come over someone
• come pass with flying colours
• come rain or shine
• comes into head
• comes into your head
• come the raw prawn
• come through with flying colours
• come to a full stop
• come to a head
• come to a sticky end