Unfortunately in the US, any conviction leads to essentially a work "blacklist," whereby employers do background checks and deny employment for anything they find within 7 years.
Not for non-violent misdemeanors. Unless you're a flagrant offender you will normally be slapped don the wrist and given a stern lecture in the form of a class. Source: was in a fraternity in the US where literally nothing bad happened to anyone I knew with a misdemeanor outside of a fine and class
A lot of companies won't hire you if you have a criminal record of any kind. Some won't even hire you if you have any record of arrest, regardless of conviction.
