Rain above the loading bay

An original account of an invented warehouse shift.

The rain made a steady drumming on the loading-bay roof. Indoors, we could barely hear the delivery driver's question. He pointed at the nearest stack of cartons, but I shook my head and led him to the desk. The order numbers were there, written on a sheet that had somehow remained dry.

My supervisor was unhurried. She checked each number against the cartons before allowing us to move anything. At first, I thought she was wasting the few minutes before the next van arrived. Then she found two identical labels on different boxes. We stopped complaining about the pace. Sending the wrong carton would take much longer to put right than reading the list twice.

In this passage, what does “unhurried” mean?