This is the 2449th most frequent Japanese word.
不当
Unfair; unjust; improper.
The word '不当' in this sentence is used to describe an action that is deemed unjust or unreasonable, specifically referring to the dismissal.
彼の解雇は不当である。
His dismissal is unfair.
Here, '不当' qualifies '利益,' indicating the profitability achieved through unjust means, expressing the ethical wrongness.
不当な利益を得ることは倫理的ではない。
Obtaining unjust profits is not ethical.
The term '不当' in this context describes the nature of the treatment towards the people, emphasizing injustice or impropriety in handling the situation.