they always ask me to cover for this chap who's got plenty of
leave to clear. And when my sup goes on leave (also plenty of
leave), the chap will cover for the sup, and i will have to cover
for the chap and at the same time do my own share of work. Been
covering for almost 10wks... xian..
and now the chap is back and is suppose to teach a new girl his
work on Monday. He just simply push it to me and said since i've
been following up all these while, just hang on to it. 
Fair or not??