is it possible to get custom field value saved in logged in employee record in Advanced PDF/html templates ? I have a custom field in employee record, i want to show value of the custom field for specific employee who is printing the pdf

I don't think that the Employee record uses a PDF Advanced Template.

Are you printing a transaction? I think you're able to add a custom body field (store value off) that sources from "Entity (Employee)" and then your custom employee field