Bees will die in many ways, and their after-death outcomes are different.
1. Stinging
When a bee stings you, this is the last thing they will do in their lifetime in a situation like this. Their stinger will stay lodged in there until the bee tries to remove the stinger and receives abdominal rupture, dying from this.
2. CCD (Colony Collapse Disorder)
Just as usual, all bodily functions start breaking down, and the bee dies. Their body just goes into rigor mortis.
3. Natural Causes
Yes, just death, and rigor mortis.