Tipping is not customary, or expected, in the islands of Fiji. Fiji is a communal society, so the concept of giving just one person a "reward" for doing their job is an alien one to them.
To keep in line with the customs of the indigenous population, resorts have a "staff Christmas Fund." At the end of your stay, should you want to, you may put money into this box. It is then divided up at the end of the year between all of the staff.
This is actually a great way to go. The staff gets a nice big "bonus" (it sort of acts like a bank account for them), and the money is divided between all - even the gardeners who are doing their job just as well as the front line people.
If you feel compelled to tip an exemplary tour guide, for example, it will be graciously accepted, but please note that this is not required nor anticipated. Many Americans who travel for the first time to Fiji feel that the Fijians are going out of their way to help you on the streets because they "expect a tip." This is not true. Fijians are warm, wonderful people who are naturally hospitable - and will often times invite you for supper in their homes, just to have some interaction with visitors from "far away."
This tip is provided by supplier M08536