Permod Kohli, J.

1. Based upon the identical and common questions of law and facts, these petitions are disposed of by this common judgment. The issue relates to counting of ad hoc service for the purpose of determination of seniority in the service.

2. The petitioners in all these writ petitions were initially engaged on ad hoc basis having been sponsored by the Employment Exchange and on being selected by a Committee of officers constituted for the purpose of making selection. The petitioners continued to work on ad hoc basis as Lecturers in different subjects spreading over a period of six to ten years and in some cases up to 12 years. Their services were later on regularized by the Government. The petitioners are claiming seniority by counting their ad hoc service towards total length of service rendered by them. Representation of one of the writ petitioners,namely, Sajjan Singh has been rejected vide order dated 24.5.2006 (Annexure P-10 impugned in CWP No.8604 of 2007).

The facts are being noticed from CWPNo.8604 of 2007. The petitioners in this case were registered with the Employment Exchanges. Posts of lecturers in different subjects were advertised for making ad ho