About how long?

Question

should you wait, after turning in an application for a job, to call & check on the status of it.

Answer 1

If you're mailing in a resume, you can call to confirm its receipt within a few days.  Call again in a week to follow up on it.  If you just turned in an application somewhere in person, call in one week.  If you were interviewed, send a thank you letter and then call in one week.

Answer 2

1 week