The system of parliamentary committees has significantly affected the overseeing and appraisal of legislation by the Parliament in several ways.

Since the Parliament meets only during sessions, it has very limited time at its disposal. The making of law requires in-depth study of the issue under consideration, which demands more attention and time. Parliamentary committees fulfill this need effectively.

Since 1983, India has developed a system of parliamentary standing committees. There are over twenty such departmentally related committees. These committees play a vital role not merely in law making, but also in the day-to-day business of the House.

The committee system has reduced the burden on the Parliament. Many important bills have been referred to committees. The Parliament has merely approved the work done in the committees with few occasional alterations. Standing Committees supervise the work of various departments, their budget, their expenditure and bills that come up in the house relating to the department.

Of course legally speaking, no bill can become law, and no budget will be sanctioned unless approved by the Parliament. But the Parliament rarely rejects the suggestions made by the committees. This shows how committees have become central to legislative oversight.