Dear teachers

What's the difference between cut back something and cut back on something?

A. My boss cut back my salary.

B. You should cut back on smoking.

C. She cut back my teaching hours.

D. We should cut back on the budget.

E. I started cutting back on (eating) fatty food.

F. We have to cut back on electricity and water to save more money.

Are the sentences above acceptable?

Thanks for your elucidating. Emotion: smile
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Comments  (Page 2) 

Let’s say Joe is working full time in a factory where he is working 40 hours a week. The factory receives only 50% of the normal monthly order this month and so the management decides to cut the hours of the floor workers. To me, if Joe says his hours are cut back, it is redundant in this context. However, it’s not deemed grammatically incorrect, and it’s still understood.

If the management says “We have to cut back on the hours of the floor workers” that is acceptable.

“My boss cut back on my classes” – this comes across to me as unclear just based on the simple context. I guess if you are taking courses / classes which are paid for by your employer who for monetary reasons is cutting back / scaling back the classes you are taking, I think it’s acceptable.

Cut has the notion to remove, eliminate, terminate.

Cut back is to reduce, lessen, downsize, and make smaller.
Thanks Goodman and Garnett

Goodman says We have to cut back on (the consumption of) electricity.

But according to you, cut back consumption is correct.

I'm confused as to which one is correct?

Thanks !!
Students: We have free audio pronunciation exercises.
Thanks Goodman

I'm wondering if I should say " You should cut back on the excercise." or "You should cut back the excercise."

When do I have to use ON after cut back ?

Your detailed explanation has been of great help to me.