All individuals, companies and organisations, government departments and educational institutions are welcome to join.

By making a donation of HK$60 or more (no minimum is set for students), staff members / students can put on the Dress Special Day stickers and go to work / to school in casual wear on the event day. There is no minimum contribution set for students to participate and they are most welcomed to get sponsorship from friends and relatives.

If you are required to wear uniform, you can still be part of the action by making a donation and putting on the Dress Casual Day sticker to show your support.

HELLO KITTY and DIN-DONG have collaborated to create a crossover icon for the event to show their support. For those who make a donation of HK$100 or more, a limited edition HELLO KITTY x DIN-DONG Dres Casual Day plastic folder will be given as souvenir while stocks last.