
Early career: Trial lawyer
- 1940. Topped the CPA Board Examination, with a grade of 91.18 percent.
- 1944. Topped the Bar Examinations, with a grade of 95.3 percent.
- 1954. Chairman, CPA Board Exam Investigating Committee, created by President Ramon Magsaysay
- 1958. Member, Special Committee to Investigate Department of Finance Anomalies.
- 1960. Member, Special Committee to Investigate Bureau of Supply Coordination Anomalies
2 January 1962 - 19 May 1962: Secretary of Justice
- Investigated and prosecuted Harry Stonehill for tax evasion and other crimes
- Fired by President Diosdado Macapagal
1963 -1972: Senator

- Oil Industry Commission Bill
- Investments Incentives Act
- Export Incentives Act
- Revised Election Law
- Equal Pay for Equal Work Act, which was passed unanimously to curb racial discrimination in American companies operating in the Philippines, but vetoed
- 1964. Delegate, International Commission of Jurists, Bangkok, Thailand.
- 1965. Delegate, lnterparliamentary Union Conference, Ottawa, Canada
- 1965. Delegate, United Nations General Assembly
23 September 1972 - 11 September 1974: Political Prisoner.
- Arrested on 23 September 1972, at his home at 12 Margarita Street, Magallanes Village, Makati, Metro Manila
- Detained at the Maximum Security Compound, Fort Bonifacio, Makati, upon an Arrest, Search and Seizure Order (AS SO)
- Kept under solitary confinement at Laur, Nueva Ecija from 12 March to 11 April 1973
- Never charged nor tried
- Conditionally released on 11 September 1974
1974 - 1987: Human Rights Lawyer, Patriot and Nationalist
- Founded and led the FREE LEGAL ASSISTANCE GROUP or FLAG (1974-1987), an association of lawyers from all over the Philippines who render their services, free of charge, to promote the rule of law and respect for human rights in society
- Chair, Civil Liberties Union (1975-1982)
- Secretary General, Regional Council on Human Rights in Asia, with consultative status with the United Nations Economic and Social Council (1983-1987)
- Secretary General, Anti Bases Coalition (1981-1987)
- Convenor, Justice for Aquino, Justice for All or JAJA (1983)
- Member, Convenor Group that projected Corazon Aquino as presidential candidate (1984-1986)
1986, Chair, Presidential Committee on Human Rights
- Resigned on 23 Januarv 1987, in protest of the massacre of farmers at Mendiola
- Principal Government Negotiator in Peace Talks with the National Democratic Front
You said:
it is very timely to honor a man with distinguished career and great contributions to philippine politics like “ka pepe” to be remember by all Filipinos. We salute all the people behind the naming of a street in honor of Sen. Jose W. Diokno.
— s.i. garay on Diokno Boulevard