The phrase "abused their position" is correct and usable in written English.
It can be used in contexts where someone has taken advantage of their authority or role for personal gain or unethical purposes.
Example: "The manager was found to have abused their position by granting favors to friends within the company."
Alternatives: "exploited their authority" or "misused their power".
They have ignored their professional duty and their moral responsibility, and instead abused their position of power to exploit victims.
Suggestions that the unions abused their position in the voting process will add fuel to the fire.
The strategies are common to both: options market makers, who enjoy a limited exemption from the rules, are said to have abused their position.
If somebody abused their position, it is a very serious matter and a matter that we are outraged about if it turns out to be so.
We just don't know enough to talk details about this, but I think there can be no mistake; the Athenians abused their position of power and leadership in the empire.
Here someone is found to have abused their position of public office — given jobs to relatives, accepted bribes, spent public money on personal pleasures — but does not resign, does not think of resigning, attacks the moralists and sails on regardless.
Investigators were focused on Henderson and did not address whether the public officials she helped had abused their positions.
Despite clear prohibitions against investing in Russia, Harvard advisers abused their positions and attempted to tip the playing field to their own private financial advantage".
Mr Putin may also seek to curb the powers of the regional governors, some of whom, it is true, have abused their positions.Still, it is early days.
Liberals in black robes, they complain, have abused their positions to usurp the prerogatives of Congress and obstruct the popular will.
The employees, both from the Department of Social Protection, had their pay cut earlier this year after internal investigations found they abused their positions and breached data-protection rules.
