It is given in an honor of writers who has written best scripts (not based upon previously published material) and screenplay adaptations (usually a novel, play, short story, or TV show but sometimes another film) working in the television industry.
As of 2015 year ceremony, Khalil-ur-Rehman Qamar is the most recent winner in this category for his original screenplay Sadqay Tumhare.
The Best Writer drama serial category originates with the 1st Hum Awards ceremony since 2013.
Each individual entry shows the title followed by the drama serial, and the television writer.
For example, the 1st Hum Awards presented on 28 April 2013, to recognized dramas writer of dramas that were released between January, 2012, and December, 2012, the period of eligibility is the full previous calendar year from 1 January to 31 December.