If I'm not on the clock, I will not be able to discuss something work-related with you. I don't care if it will "only take a minute," if I'm walking in at 8:55, or running out to eat lunch, it's MY time. If I am late clocking in, I will be lectured, so you can wait until I'm being paid to listen to this bullshit. Because it's always bullshit. If it's a real emergency, I wouldn't be handling it anyway, so yes, actually, it can wait.