What are the tax consequences for Employee Erin in each of the following?

1. In Year 1, Erin receives shares of corporate stock from her employer-corporation with a FMV of $200 for no consideration (i.e., she pays nothing for the stock shares). No restrictions attach to Erins receipt and continued ownership of those shares. The stock has a FMV of $300 at the end of Year 3, but she does not sell until Year 5, when she sells for $500

. 2. Same as 1., except that the stock certificates are stamped with a legend that states that, should Erin quit or be fired for cause before the end of Year 3, she must forfeit the stock back to her employer-corporation. Erin does not make the 83(b) election. The stock has a FMV of $300 at the end of Year 3, but she does not sell until Year 5, when she sells for $500.

3. Same as 2., except that Erin decides to make the 83(b) election. The stock has a FMV of $300 at the end of Year 3, but she does not sell until Year 5, when she sells for $500. What if, instead, the shares lose value and she is able to sell for only $100 in Year 5?

4. Same as 3., except that Erin is fired for cause in Year 2 before the stock vests, and she must forfeit the stock at that time.