My work seems to be breeding......

Every time I'm about to finish a stack of glasses another comes in. Happens mostly in the beginning of the week when the order of glasses from friday and/or saturday doesn't come in till tuesday or wednesday. By then I already have a stack from monday and tuesday and it all just piles up. I'ts not overwhelming because I finish them eventually. I don't know if its the shipping department that delays the packages or if its ups.