This dissertation consists of three essays on bank loan commitments. The first essay is an in-depth review of the loan commitment literature. The other two essays shed light on the following stylized facts about loan commitments. First, since the early 1980s, the courts have often obstructed the bank's right to deny credit to a loan commitment owner by invoking the Material Adverse Change (MAC) clause, arguing that the bank did not act in good faith. What is surprising is that the existing literature suggests that the MAC clause has economic value. So, the courts' behavior in invalidating the MAC clause has remained a puzzle. Second, the Federal Reserve's Senior Loan Officer Survey (1988) shows that borrowers view the guarantee against bein...