1. Catering industry: Restaurants and coffee shops are busier on weekends, so extra waiters or chefs are needed to cope with peak hours.

2. Retail: department stores, supermarkets, convenience stores, etc. It is busier on weekends and holidays, so extra staff are needed to cope with the peak hours.

3. Entertainment industry: cinemas, gyms, KTV and other weekends and holidays are busy, and extra waiters or staff are needed to cope with peak hours.