Retail employees will not complete tasks

I'm having the same issue as well. I have two employees. One was promoted up because he got to 3 bars in work ethics. I assign him to ring up customers and all he does is chat. Lost lots of customers because my owner sim is the only one checking them out. The second employee needs to be fired. All she does is chat, no matter what I assign to her. It gets frustrating watching npc sims walk out mad without their wanted items.

On a side note, is there a way to check your own Sim's work bars? I would love to see how my Sim is doing in the three different categories. Thx!