He was also the co-founder of Encore magazine which was published between 1954 and 1965, and co-editor of The Encore Reader: A Chronicle of the New Drama (1965). He was a regular contributor to publications such as The New York Times, The Times (London), TheaterWeek, and American Theatre and was the lead critic on the Los Angeles Herald-Examiner until it ceased publication.
The period as a critic in London was recorded in the book Confessions of a Counterfeit Critic (Eyre Methuen 1973). Its subtitle was A London Theatre Notebook 1958-1971.
His free adaptations of Shakespeare were collected in The Marowitz Shakespeare. He died of complications from Parkinson's disease in 2014 at the age of 80.[5]
Marowitz, Charles, ed. and trans. (2000). The Marowitz Shakespeare: Adaptions and Collages of Hamlet, MacBeth, the Taming of the Shrew, Measure for Measure, and the Merchant of Venice. London: Marion Boyars. ISBN978-0-7145-2651-5.
–––, Tom Milne, and Owen Hale, eds. (1981). The Encore Reader: A Chronicle of the New Drama. London: Methuen, 1965. Reissued as New Theatre Voices of the Fifties and Sixties. London: Eyre Methuen.
Trussler, Simon (2014). Charles Marowitz in London: Twenty-Five Years Hard: Marowitz in the Sixties. New Theatre Quarterly, 30:3, p. 203–206