My foreign employer does no issue W-2 forms. In the past I have simply converted my income from Danish crowns to US dollars and reported this amount on my 1040 form. Wh

Why is turbotax asking me to complete Form 4852?  I've been doing this for 20+ years and never used Form 4852 before?  Can I not simply submit my official annual 2016 Income document from my employer (Copenhagen International School)?