What are the pros and cons of the following cases
1. McDonnell vs Green (p91) employment law for business
2. Griggs vs Duke power(p 94 )employment law for business
3. Herawi vs State of Alabama(p 85} employment law for business
4. Petruska vs Gannon (p 130) employment law for business
5. Vaughn vs Edel (p 295) employment law for business