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Please check my answer.

Q. Do you agree that people nowadays do not work as hard as the people in the past?

My answer

I agree that people nowadays do not work as hard as the people in the past.

First, nowadays many people consider leisure time very important. For example, they go traveling rather than working on the weekend. Another reason is that they do not think of their jobs as a job for life, so they only focus on their given tasks.

For these reasons, I agree that people nowadays do not work as hard as the people in the past.
Comments  
I agree that people nowadays do not work as hard as the people in the past.
First, in modern day many people consider leisure time very important. For example, they go traveling rather than working on the weekend. Another reason is that they do not think of their jobs as a job for life, so they only focus on their given tasks.
For these reasons, I agree that people nowadays do not work as hard as those in the past.

*Note: you use 'nowadays' for so many times. It is advisable to find its synonym to make the paragraph sounds less redundant.
Thank you very much!