Please discuss the employment issues in M&A$.$ In particular, discuss in detail your answers to the following questions:

a$.$ Who is responsible for WARN Act notification in a stock and in an asset purchase?

b$.$ Are there any differences between stock and asset purchase in their treatment of collective bargaining agreements in place for the target firm?

c$.$ Are there any differences between stock and asset purchase in their treatment of qualified retirement plans in place for the target firm?

d$.$ Are there any differences between stock and asset purchase in their treatment of welfare benefit plans in place for the target firm?