Guideline Regarding obtaining No objection Certificate before applying for Passport or undertaking any foreign trip.  

The Fundamental Rules of the Tamil Nadu Government

Tamil Nadu State and Subordinate Services Rules

Section - 13 - Special Rules for Class XXII of Tamil Nadu General Subordinate Service

Section-16 Tamil Nadu General Service - Classes XII , XII-A, XII-B & XII-C

Section-19 - Tamil Nadu Basic Service

Section 22 - Tamil Nadu Ministerial Service

Section 29 - The Tamil Nadu Secretariat Service

Vigilance & Anticorruption - Tamil Nadu General Service 
a)  Class  LXXIV            b)  Class  LXXV

Tamil Nadu Public Service Commission Regulations, 1954.

Tamil Nadu Civil Services (Discipline And Appeal) Rules

Tamil Nadu Civil Services (Disciplinary Proceedings Tribunal) Rules 1955

The Tamil Nadu Government Servants' Conduct Rules, 1973