Dear Malay Gauri Consultants Private Limited,
Let me clarify that the section related to "rounding off" of completed years is applicable after an employee has completed 5 years of continuous, uninterrupted service.
Based on some court verdicts, an employee may be eligible for gratuity after completing 4 years and 240 days. However, your statement "completes 4 years and 6 months of continuous service" is not the right approach to define the criteria.
Moreover, as per the Payment of Gratuity Act, 1972, the criteria of 4 years and 240 (or as applicable) days is still not regularized by any notification. I have seen many employers reject gratuity if an employee has not completed 5 years of continuous (uninterrupted) service. However, in such cases, the employee can claim gratuity by presenting their case to the Labour Office (or court) and referencing court verdicts.
Senior members can provide more input on the matter.