Depends on company policy. If the department that you turn your receipts into hasn’t said anything, the credit card points (aka, “rewards”) and the airline miles are probably yours. But check official policy. The company that I worked for, and traveled a lot for, initially let us keep our airline miles and credit card points. They were generous in this way for many years, Then, business wasn’t so good one year and they tightened things up. They issued a new policy claiming the airline miles and credit card points, since they were actually paying for those expenses. See, things can change.