incentive
US /ɪnˈsen.t̬ɪv/
UK /ɪnˈsen.t̬ɪv/

1.
a thing that motivates or encourages one to do something
:
•
The bonus served as a strong incentive for employees to work harder.
•
There is no incentive for them to change their behavior.
a thing that motivates or encourages one to do something