"They are lifting the heavy bricks to build the equitable world we all deserve to live in", the actor wrote.
Over the past two weeks, Weinstein has been accused by numerous women of sexual misconduct, including harassment and abuse.
A movie focusing on a boy who was dealing with the aftermath of sexual abuse is no longer in development at The Weinstein Co., with Channing Tatum announcing on Instagram that he "will no longer develop it or anything else that is property of TWC". Weinstein was sacked by the board on October 8, three days after a New York Times detailed a decades-long pattern of alleged harassment. The film was set to be Tatum's directorial debut. Channing Tatum and Reid Carolin considered their move to cut ties with TWC as part of their commitment to bring real positive change after hearing the stories of alleged sexual abuse victims.
Mr Chemloul, who worked for the producer in Cannes from 2008 to 2013, said: "I had the feeling of driving poor innocent people, innocent girls, to the jaws of the wolf, and I could not say to them, 'Be careful where you're heading - it's unsafe".
"I didn't know what had happened, but I had to console them - offer them water, or a cigarette".
Tatum, who was due to co-direct for the first time, paid tribute to Harvey Weinstein's accusers in a Facebook post signed Chan and Reid. He was forced to resign from the company's board on Wednesday, as its members continue to dwindle.
He has admitted his behaviour has "caused a lot of pain" but has described numerous allegations against him as "patently false".
For those not familiar with the book, it tells the story of a teenage boy who plans to kill his best friend and himself after a traumatic incident of sexual abuse. Though he apologized immediately for his inappropriate behavior, he "unequivocally denied" any allegations of non-consensual sex in a statement provided to The New Yorker magazine by his spokeswoman.