can employer or factory manager force the worker to get off from job, if the factory still have work for the worker to work at?

If you're asking can they tell you to go home even if there is work to do, yes they can. (unless you have an employment contract to the contrary)

If you're asking can they tell you to go home even if there is work to do, yes they can. (unless you have an employment contract to the contrary)

That might be the question, who knows? The question was unclear to say the least.

But, Betty3, thanks for playing. :)