As you enter a new field at work, working part time can be beneficial. DoIng so allows you the opportunity to dip your feet in the water to see if you like the job and if you see yourself making a career at it. In addition, getting in slowly into a new field gives you the chance to learn without rushing, take things in, as well as get some rest and fun on your down time, which you may not have later on as you go deeper and get more responsibilities.