No, money isn't the only reason people work hard. Some people really care about their jobs and want to do well. They might also want to get better at their job or get a promotion.

Yes, for a lot of people, earning money is a big reason why they work hard. They need it to take care of their family and to buy things they want. Also, jobs that pay more can make people want to work harder.

It depends on the person. Some people might work hard because they need money, but others might do it because they love their job or want to help people. It can change depending on where someone is from or how old they are.