It is a hardcover book that is dark green with the title of the book imprinted in light green letters. Inside, there are only shown to be words. The book has orange gilt edges on the cover. It is a work schedule for Krusty Krab employees, hence the title.
At the beginning of the episode, SpongeBob reads this book on the grill in the Krusty Krab kitchen. He chuckles while flipping through pages in the book, much to Squidward's annoyance. Squidward picks up the book that SpongeBob is reading and questions on what's so great about it. SpongeBob then claims that the book has a list of "his happiest memories."
Squidward "accidentally" drops it on the grill and burns up SpongeBob's memories. However, SpongeBob has multiple copies of the book in a cabinet, which he proceeds to get.