all business contacts are the property of the business. you first need to make sure it is okay with the boss. some people will leave a job taking contacts with them then start their own competing business. some have been sued and even jailed for doing it. that said...
a simple online search will tell you how to move contacts from outlook to gmail.
I am going to be retiring soon (shhhh... my boss doesn't know yet) [and] over the last 27 years I've built up quite an address book! And a few emails which currently reside within the Microsoft Outlook platform. I would like to transfer this to a personal system (address book, calendar, and email) and like many people I do have a Gmail account but not sure whether that is best and if so how to go about doing that. Thanks!
--Submitted by Scott H.