Dear Pankaj,
As per the ratio decidendi of the judgment of the honorable High Court of Madras in the Mettur Beardsel Limited case, it is sufficient that the employee has completed 4 years and 240 days of service in the fifth year to be eligible for gratuity under the P.G. Act, 1972. It is incorrect to state that the application of 5 years of continuous service is dependent on the number of working days in a week, as the definition of "continuous service" under section 2-A of the PG Act, 1972 includes all authorized leave and holidays. If it is urgent that you should leave this job immediately, ensure a smooth relief and file your claim for gratuity afterward before the Controlling Authority under the Act.