Miller starred alongside the Black Panther star in the action thriller 21 Bridges, which also produced Boseman, after pursuing her to play Detective Frankie Burns.
Tributes poured in last month when Boseman died aged 43, four years after being diagnosed with colon cancer.
“He was a fan of my work, which was exciting because he was tenfold from me to him,” Miller said. “So he approached me to do it, he offered me this film, and it was at a time when I really didn’t want to work anymore. I had worked tirelessly and was exhausted, but then wanted to work with him.
She continued, “It was a big budget movie, and everyone understands the pay gap in Hollywood, but I asked for a number that the studio wouldn’t come up with.
“And because I was reluctant to go back to work and my daughter was starting school and it was an inconvenient time, I said, ‘I will if I get paid the right way. And Chadwick ended up donating part of his salary to get me back to the number I asked for.
Miller said this kind of generosity and support is unheard of in the film industry. ” [It] just does not happen. He said, “You are paid what you deserve and what you are worth. It is simply unfathomable to imagine any other man in this town behaving with such grace or respect.
She said she later told male actor friends about Boseman’s actions “and they all go very, very calm and go home and probably have to sit and think things over for a while.”
“But there was no clairvoyance, it was, ‘Sure I’m going to take you to this number because that’s what you should be paid for.’
Miller said in a special commemorative issue of Empire magazine that she was initially not sure whether to tell the story. “But I’ll say it, because I think that’s a testament to who he was,” she said.