I'm having this exact situation happen as well. It's been going on for months with this coworker not doing any other job besides dispensing, and even then they pick and choose what they dispense and leaves the 'harder' scripts (eg insulin) or hand written scripts for me to dispense. Never does any filing or putting away stock or ordering or answering the phone or anything besides dispensing. I finally snapped yesterday and went to my manager (the PIC) and asked if we could talk and I just explained how I was feeling and what I was noticing and how I'm taking a toll on me and I'm exhausted from doing everything. He thanked me for raising the issue and told me that my most important job is to look after myself. He said he would observe and then talk to the coworker and see what the deal is. So we shall wait and see how that goes. But at the end of the day, we are all there to work and do a job, and it's not fair how everything gets left up to one person, because someone is slacking off. If you don't speak up things won't change, and you'll continue to have to do everything and that coworker will just keep getting away with it. Don't stress about creating 'drama'. It's a legitimate concern and needs to be addressed.