ーThere are a lot of people at this company who try to throw their weight around.
「この会社にはのさばっている人がたくさんいる」
to throw one's weight around で「のさばる・幅を利かせる・威張り散らす」
ーThere are so many people I work with who push to get their own way.
「職場にのさばっている人がたくさんいる」
to push to get one's own way で「のさばる・好き勝手する」
ご参考まで！
カナダ 
