Meeting or even exceeding the daily average of sales is apparently no excuse for not doing more than the required amount of tasks.
Most gas station attendants often work alone for more than four hours without breaks or sitting down, and yet they're lambasted when they haven't done MORE than the required amount.
They're tasked with not only a repetition of customer service without adequate breaks but forecourt safety, restocking shelves, cleaning, cooking, heavy lifting, even troubleshooting and coordination with local authorities about the theft of products and fuel.
Fast food staff have teammates and individual tasks while gas station attendants are unreasonably expected to multitask without breaks.
And of course, the companies and managers don't want to know or do any better for them, because they're getting an excess amount of output for the minimum amount of concessions and wages.