What is the full office location address where most of the employees work at?
full office location address = address, locationcity, state, zipcode; location where most employees work at refers to MAX(locationID)
SELECT T2.address, T2.locationcity, T2.state, T2.zipcode FROM employee AS T1  INNER JOIN location AS T2  ON T1.locationID = T2.locationID GROUP BY T2.address, T2.locationcity, T2.state, T2.zipcode ORDER BY COUNT(*) DESC LIMIT 1