Gratuity
Gratuity is an additional amount paid by an employer to the employee for the services rendered during the period of employment. Gratuity is also known as End of Service Benefits sometimes, but it is the same thing.
Generally, employers pay gratuity at the time the employee leaves the organization. The amount of gratuity you are entitled to will depend on the jurisdiction you are working in, each country has its own laws governing the gratuity amounts.