Combination of Wireless and Wired

Alright, so I've run into this a few times at work, and I'm sure it's something small and stupid, but here it goes anyway.

A few people at work use laptops as their desktops, so they carry them between home and work quite often. At home they use wireless, but at work generally they'd prefer to use a wired connection. The odd thing is that usually when they get into work, their wireless likes to supersede their wired connection and for some reason the wired connection says Limited or No Connectivity until the wireless is disabled. They should be able to coexist just fine, but for some reason aren't. Any suggestions?

That's what I've been telling them to do since once their wireless was disabled, their wired connection worked just fine. I'm just trying to see if there's a way that they don't have to do anything. Like I said, I don't know if it's just something small I've missed that could help them or if they're going to have to just keep disabling and then re-enabling their wireless every time they come and go from the office.