Had a few worse things said to me than below, however a nice, lighthearted, piece of good advice!
In order to make them feel welcome, few things you should definitely avoid saying to your new coworker: 1. 'You're cute. Want to go on a date?' It's totally inappropriate to put the new person on the spot like this. Wait to get to know them before creating a potentially awkward situation. 2. 'Don't hang out with those people ... ' Even if you have perfectly valid reasons to hate certain people in the office, this just makes you... http://uk.businessinsider.com/never-say-this-to-a-new-coworker-2016-12?r=US&IR=T