This news is a little old, but a report in last Saturday's Taiwan News cites a study that found that "[m]ore than half of Taiwan's university freshmen spend less than one hour per day studying outside of the classroom" and "the situation is similar among college seniors".
The article also mentions that "more than 40 percent of seniors at state-run universities and colleges are working part-time, a much higher figure than their counterparts at private universities and colleges." This is interesting, continues the article, because it "contradicts a commonly held belief that students at private universities and colleges which charge a higher tuition are more likely to work on the side while pursuing their studies."
A China Times article that was reprinted on the National Science Council's website adds that the survey was done by over 40 educational researchers and was given to over 40,000 first-, second-, and third-year university students. The study was conducted by Peng Sunming (彭森明) as part of a larger study commissioned by the National Science Council.