Prediction approach on unique data or progressive data
Creating model on second scenario is difficult but more information driven and give you more prediction capibility.

What you can do is use second scenario and create some featured variable. These variable will give information like after marrying in how many months attrition happen and so on. 

So think what other info you can take out of this trend.

First scenario is not of much use, because it's just giving you last information of employee which hides many important relevant information which are actually driving attrition.