"...leave." That was for a long time the usual (and proper) response by an employer to an employee who had complained about working conditions.
Now -- after decades of legislation and court rulings that have destroyed freedom of contract, employment at will, and employers' property rights -- the employee can say with impunity "I don't like it here, so I'm going to sue you." And the employee, all too often, will prevail.
Lou Michels offers a case in point. Read it and weep.