Honey Bees are assigned jobs based on their age

The Worker Bee

1-2 Days Old: spend their time cleaning cells, starting with the one they were born in and keeping the brood warm

3-5 Days Old: they feed the older larvae

6-11 Days Old: they feed the youngest larvae

12-17 Days Old: they produce wax, build combs, carry food, and perform undertaker duties

18-21 Days Old: they perform guard duty by protecting the hive entrance

22 Days Old: from this time until their death at around 40-45 days, they fly from the hive collecting pollen, nectar, water, pollenating plants, etc.