After completing her graduation, Hosne Ara Begum joined the Department of Law at Manarat International University in 2009 as a Lecturer. Her areas of teaching interests include children's rights, labour law, equity, company, family and humanitarian laws. She participated at various seminars on those fields including a seminar on Children's Rights in November 2009 and on International Humanitarian Law in 2010 both held at Nabab Nawab Ali Chowdhury Senate Bhaban, University of Dhaka.