You are sending a link to...
Thirty Risky Firings
Gruntled Employees listed the thirty riskiest firings and emphasized that just because firing one of the listed employees is risky does not mean that an employer should not do it. 

I want to add to the relevant considerations.  If an employer has an employee who did not get paid for all time worked (#22) or who did not receive all overtime pay (#23), the employer should get its house in order.  Otherwise, summary judgment will be mighty difficult. 

Of course, there is not much an employer can do about #29 – those pesky employees who “are related to, friendly with, or live near a lawyer.”  Who would want to be friendly with a lawyer?