because he has too much work to do but not enough time to finish everything.

因为他的工作量太大了，却没有足够时间把每件事做完。

How about 课堂 - SpeakingMax英语口语达人

I guess you can't really work because there's too much unemployment

我觉得你不能先工作，因为失业太多了，

英国的高考 - SpeakingMax英语口语达人