My boss doesn't like to rock the boat at work, but it makes it hard for the people under him.
この場合、次のような言い方ができますよ。
ーMy boss doesn't like to rock the boat at work, but it makes it hard for the people under him.
「上司は事なかれ主義で、彼の下で働く人たちは困る」
doesn't like to rock the boat を使って「事なかれ主義」を表現できます。
ご参考まで!