Student or Learner
After two days emergency leave, today I have resumed my duty. These days I will compensate in next month.
See my changes above. I changed the end to "in the next month". That means that you will make up those days in the next 4 weeks (approximately). If you mean you will make them up in December, then just say "I will make up those days next month".
Note that thread titles should contain some or all of the words/phrases you are querying. A good title for this thread would have been "After two days emergency leave".
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.