Yap.Town

のは大変です

… is difficult

→ の
phrase Rare #21,016
… is difficult の turns the preceding action into the subject of the sentence.
JA: 毎日早く起きるのは大変です。
EN: Getting up early every day is difficult.

一回授業を休むと、クラスメートに追いつくのは大変です。

If you miss even one class, it’s hard to catch up with your classmates.

日本人にも、着物を着るのは大変です。

Even for Japanese people, wearing a kimono is difficult.

配偶者や子どもを連れて、世界の反対側まで移住するのは大変ですからね

It’s hard to move to the other side of the world with your spouse and children, after all.