My employee's gross salary is Rs. 20,000, and every month he contributes Rs. 1,800 to the Provident Fund (PF). In a scenario where he was absent from the office for 15 days, his gross salary for that month was only Rs. 10,000 based on the number of days worked. Should we adjust the PF contribution accordingly? If so, the employee would only need to contribute Rs. 900 to the PF. Is this the correct approach? Could someone please explain the correct procedure?