只要上边认可你,就算累s也愿意. 倘若白白帮懒汉,这种情况需改变

If you are working hard for nothing, you better stop doing it.

If possible, make a clear line of responsibilities between you and the lazy guy.
You deliver yours, the lazy guy deliver his.
Yes, you can help him, but your work need to be credited to you.
米国公司杂草多, 第一件事当自强.
I will tell my manager on 1 on 1 if manager didn't know the details.

Thanks!