If you studied 4 years to complete a course in 4 years - You are full-time. If however, you would have completed the degree in say 5 years then it is part-time.
Whether you working while you were studying has no relation to fulltime vs partime. Everything depends on the rules in the currently of education on what is considered fulltime, for example 9 or less credits per semester is considered part time.
Whether you working while you were studying has no relation to fulltime vs partime. Everything depends on the rules in the currently of education on what is considered fulltime, for example 9 or less credits per semester is considered part time.