CSC MC 01, s. 1990: Attendance of Government Chemical Engineers to the 51st National Convention
January 8, 1990
CSC MC 02, s. 1990: Sanctions for Violation of the Integrity and Sanctity of Civil Service Examinations
January 8, 1990
CSC MC 03, s. 1990: Authority to Participate on Official Travel in the Forthcoming Plebiscite on the Organic Act for the Cordillera Autonomous Region
January 18, 1990
CSC MC 04, s. 1990: Attendance of Women in Government to the "Araw ng Kababaihan" on March 8, 1990, "Second National Congress of Women in Government" on March 30, 1990 and "The Joint GO and NGO Women's Congress" on March 31, 1990
February 1, 1990
CSC MC 05, s. 1990: Authority for Women Delegates from Government Agencies in Region VIII to Attend the Congress of Women on March 15, 1990 at the People's Center in Tacloban City, Amending M.C. No. 40, S. 1989
February 2, 1990
CSC MC 06, s. 1990: Guidelines on the Implementation of CSC Resolution No. 90-073 dated January 22, 1990
February 2, 1990
CSC MC 07, s. 1990: 1990 Government Internship Program
February 5, 1990
CSC MC 08, s. 1990: Sanctions in Cases of Fake Civil Service Eligibility
February 14, 1990
CSC MC 09, s. 1990: Attendance of Government Personnel to the 3rd Regional Convention/Seminar of the New Government Supply Officers Association of the Philippines, Inc. (NGSOAPI) on March 29-30, 1990 at the Philippine Social Science Center, Don Mariano Marcos Avenue, Quezon City
February 22, 1990
CSC MC 10, s. 1990: Guidelines for the Posting of Procedures and Requirements in Official Transactions with the Public
February 26, 1990