I've got to get to work.

I've got to get to work. I cooked, so you guys clean up. / Мне пора на работу. Я готовил, поэтому вы, ребята, моете посуду.

I'd better go get some of my work done.

I go to the gym after work.

I go to the gym after I finish work.

I go to the gym after I get off from work.

take one's job seriously

You know how seriously I take my job as the editor of the school's paper. / Вы знаете, как серьезно я отношусь к своей работе в качестве издателя школьной газеты.

I've got no job.

I sympathize with you losing your job.

job interview

I have a very important job interview tomorrow morning. / Завтра утром у меня очень важное собеседование по работе.

We'd better get to work.

get a new job

Jack got in hot water with his boss and had to get a new job. / Джэк попал в щекотливое положение с боссом, и ему пришлось найти новую работу.

My work here is done.