gratuity is the money that companies pay thier employees on termination of service in recognition of thier service to the company - kind of a going away bonus. this is over and above thier salary/ wages.
gratuity is embedded/provided for under the labour law (Atricles 132 through 142). I haven't typed up all the relevant articles on this, but 132 starts off "An employee who completes one year or more in continous services shall be entitled to gratuity at the end of his service. .."
the relevant articles cover the application of the regulation on gratuites.
for instance an employee is entitles to the equivalent of 21 days wages for each of the first five years in continuous service, with an additional 30 days wage for each year of service thereafter - gratuity no to exceed 2 years wages..
now to get to the nitty gritty. some companies reduce the basic salary of the employee (this has to be shown on the labour contract) to include thier gratuity pay out... in effect this is like a forced savings plan, the money that would be paid to them at the end of thier service is deducted from thier salary/ wage on an ogoing basis and then paid to them on completion of thier contracts - without the employer having to pay any additional costs.
if your employment is terminated under article 120 you you resign before the termination of your contract your gratuity is forefit..
sorry, got a bit carried away on the awnser...