This means you have to do something. You do not want to do it. But you have no other choice.
Noun + を + 余儀なくされるPrimary
This means you have to do something. You do not want to do it. But you have no other choice.
会社は採算が合わないため、そのプロジェクトからの撤退を余儀なくされた。
Because it wasn't profitable, the company was forced to withdraw from that project.
怪我により、彼は志半ばで現役引退を余儀なくされた。
Due to his injury, he was forced to retire from his career midway through achieving his goals.
大型台風の接近に伴い、沿岸部の住民は避難を余儀なくされるでしょう。
With the approach of the large typhoon, residents of the coastal areas will likely be forced to evacuate.
計画の変更を余儀なくされたチームは、新たな戦略を立て直した。
The team, which had been forced to change its plans, formulated a new strategy.
幸いにも、景気回復のおかげでリストラを余儀なくされることはなかった。
Fortunately, thanks to the economic recovery, we were not forced into a situation where we had to restructure (lay off staff).
This phrase is like saying, 'I had no choice.' It shows something happened to you. You did not want it. Outside forces made it happen. News reports often use it. It sounds very formal.
Both phrases mean you must do something. But 〜を余儀なくされる is for things that just happen to you. It is often used in news. 〜ざるを得ない is for when you choose to do something you don't want to do.
Don't use this when talking about simple things. For example, you wouldn't say "forced to take a walk."
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