I am Confused

I feel more and more confused everyday. The working environment is so strange.
One my colleagues is asking to quit and she will leave us soon.
However, it is so hopeless that the boss do not willing to employ the new person to replace her. Before this girl is going to leave, another girl has left and no new person has replaced her. And now, this situation has happened again. And The boss just wants to distribute the work to us. It is already so busy for us usually and if more work is still be  assigned to us, I do not dare to imagine how busy I will.
I don't think it is a rational method for the boss to save labor like this way.
It will load the entire staff in our office with a big big burden. For one guy in our office, he already has already such a busy day and night that no further works could be added to him , just because he was so busy originally. And even He could not have one day off every week. And He has to work every day. He has already worked for 7 years. He will become so miserable if there are more burdens.
I just think that if I, too, have to work like that, I would rather to resign and find another job. I could not imagine that I have to working day and night without any weekend, without any free time. Even not, I always have nightmares. This job would make me like a robot and have no time to do another things.
I don’t know whether my thought is correct or not. Just so confused and so worried.

[Good job.  I hope you don't get so busy that you are overwhelmed at work and can't enjoy life. ]

I am Confused

Red is what is wrong Green is the correct version

I feel more and more confused everyday every day. The working environment is so strange.
One of my colleagues is asking for to quit and she will leave us soon.
But it is so helpless that the boss do is not willing to employ the new person to replace her. Before this girl is going to leave, another girl has left and there is no new person to replace her. And now, this situation happens again. And the boss just wants to share the work to us. It is already so busy for us usually and if more works still be shared to is still shared with us, I do not dare to image imagine how busy I will be.
I don't think it is a rational method for the boss to save labor like in this way.
It will put the entire every colleague in our office into a big big burden. For one guy in our office, he has is already so busy day and night even if no further works had are added to him , just because he was so busy originally. And even he could not he could not even have one day off every week. And he has to work everyday every day. He has already worked for 7 years. He will become so miserable if there are more burdens (on him).
I just think that if me I, too, have to work like that, I would rather to resign and find another job. I could not image imagine that I have to work day and night without any weekend, without any free time. Even if not, I always have nightmares. This job would make myself like a robot and have no time to do another thing anything else.
I don’t know whether my thought is thoughts are correct or not. Just so confused and so worried.