7 to 14 days. According to the inquiry of Starbucks official website, the starting time varies from 7 to 14 days. Need to provide ID card, personal work experience form, social security provident fund number, etc. And apply for a health certificate. The probation period is half a year. Starbucks is the name of a coffee chain company in America. Founded in 197 1, Starbucks is the largest coffee chain in the world. Its retail products include more than 30 kinds of world-class coffee beans, hand-made espresso, various coffee hot and cold drinks, fresh and delicious cakes, and various coffee machines and coffee cups.