Photos of your relationship, any shared bank accounts, any accounts that are shared like phone, cable, or other utilities, a rental agreement with both your names on it, screenshots of your social media accounts showing a clear relationship (posts about each-other, etc), screenshots of chat logs/Skype calls, car in both your names, etc.
Not sure how employment would show how you're tied to your spouse at all unless you both work from home and you have a joint business, then you can show your tax returns, expenses etc.