A person familiar with the fines spoke to The Associated Press on Sunday on condition of anonymity because of the sensitivity of the situation. The story was first reported by ESPN.
The grievance eventually will be heard by an arbitrator appointed by NFL Commissioner Roger Goodell.
The Raiders recently won a grievance filed by former coach Lane Kiffin, who was seeking more than $300,000 in lost wages after he was fired for cause in September 2008. Kiffin was fired in his second season because of what Davis described as acts of insubordination and lying by the coach.
The Raiders announced Jan. 4 that they wouldn't exercise a two-year, $5 million option to keep Cable as coach. He went 17-27 in two-plus seasons after replacing Kiffin early in the 2008 season.
Cable didn't keep his job despite leading the Raiders to an 8-8 finish in 2010. That marked the first time Oakland didn't lose at least 11 games in a season since it won the 2002 AFC championship.
Copyright 2011 by The Associated Press