"Thanks,You're Fired!"

A man is leaving on a business trip and stops by his office on the way to the airport. The night watchman stops him and says, "Sir, don't take that flight. I had a dream last night that your plane would crash and everyone would die!" The business man cancels his trip and sure enough, the plane crashes, killing all the passengers. The man gives his watchman a $10,000 reward for saving his life, then fires him. Why?

That's why! 

Source 

This Is Not Allowed On Duty

What exactly happened? 

The man awarded $10000 obviously for saving his life. The duty of night watchman is to keep watch on office at night not to sleep & dream.

That's why he fires the watchman.

The Missing Dollar

Three travelers register at a hotel and are told that their rooms will cost $10 each so they pay $30. Later the clerk realizes that he made a mistake and should have only charged them $25. He gives a bellboy $5 to return to them but the bellboy is dishonest and gives them each only $1, keeping $2 for himself.

So the men actually spent $27 and the bellboy kept $2.What happened to the other dollar of the original $30?

Here it is found! 

Source 

The Story of Dollar That Wasn't Lost

How it was lost? 

All you need to think on the behalf of travelers to simplify things around.

Initially they spent $30 for the stay. Now these $30 distributed into 2 parts viz. 25 & 5 by clerk.  Out of 5, travelers received only 3 that means now they have spent $27 only. Out of 27, clerk had 25 & bellboy took 2! Trying to add bellboy's 2 in 27 is pointless but the base of this quiz!