Due to the dangers of company restructuring and just being fired, working for a company now is very competitive in comparison to the past.
Life inside of a company is very competitive
会社ないの生活はとても競争的です
Due to the dangers of company restructuring and just being (リストラと そのままの 解雇の恐れが) working for a company now is very competitive in comparison to the past. 昔と比べて今の会社員の生活は不安定で 会社で 競争的です
With the end of the seniority system, people in the company are vying with one another to survive.
With the end of ~＝「～が終わり」
the seniority system＝「終身雇用制度」
vie＝「競い合う」現在分詞＝vying
one another＝「互いに」
survive＝「生き残る」
With the end of the seniority system, people in the company are vying with one another to survive.
「終身雇用が終わり、車内の人々は生き残るため互いに競い合っている」
ご参考まで
オーストラリア 
日本 
