Do you use the self serve checkouts?

We were in a neighboring town Saturday to do some Christmas shopping. We went to a fast food place to grab some lunch and there was one lady working, cooking, pulling orders, serving, everything. She was very apologetic that service was slower than usual but she was the only person who showed up for work. She said she had called the owner and he was not able to get anyone to come in and he was tied up at another of his businesses so he could not come in until 4pm. She said she was glad that most people were understanding and she commented that she didn't understand why it was so hard to fill vacant jobs and why those who had accepted jobs would not show up to do them.