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Plummer stepped into the role of J. Paul Getty after allegations of sexual misconduct against Spacey came to light.
The Washington Post reported in November that Wahlberg was paid nearly $2 million for the reshoots over 10 days. Williams and the other actors, including Plummer, were paid much less for their time.
USAToday reported that the pay rate was broken down to $1.5 million for Wahlberg and less than $1,000 for Williams, who earned the $80 per diem rate.
Williams told USAToday in December, "I said I'd be wherever they needed me, whenever they needed me. And they could have my salary, they could have my holiday, whatever they wanted. Because I appreciated so much that they were making this massive effort."
The cast agreed to their pay rate, The Post reported, but Wahlberg and his agents pushed for a higher payday and the studio agreed. Williams was not told about the pay differences, USAToday reported.
The entire reshoot, which happened over the Thanksgiving holiday, cost producers $10 million, USAToday reported.
Scott, according to USAToday, was not paid for the extra work to get the film out by its Christmas planned release.
Other stars are taking to social media to comment on the pay differences, not only in "All the Money in the World," but across the board in Hollywood as well, Entertainment Weekly reported.
Williams and Plummer were Golden Globes nominees for their performances. Wahlberg, who was named the highest paid actor by Forbes, was not.
“All the Money in the World” has brought in only $20.2 million over its first two weeks.