You should acknowledge an offer of employment within 24 hours of receiving it. In your initial response to the employer, be prepared to either accept the offer, decline the offer, or to tell the employer that you need more time to decide. Do not be intimidated into accepting an offer. You should only accept if you are fully prepared to work for that employer. If you are undecided, the best response is to thank the employer for their offer, express how pleased you are, let them know you need a little more time to think about it, and verify how long this offer will remain open (review the offer timing rules below). Do not be afraid to stand your ground here. No employer has ever revoked an offer because of a student's failure to accept on the spot.