I would definitely call the 2nd company and tell them you have an offer but really want to work with them and ask when they can let you know. Let the 1st company know that you are grateful for the offer but will need some time to give them an answer. Then you’ll have all the info. Be upbeat and excited. It will come through in the phone call.

Hi! I think that it is appropriate to ask what their timeline is. If they say "tomorrow", I think that is pretty unreasonable. Given that you cannot start until March as well, I think those are important to note to your potential employers. I do not recommend taking a role and backing out if it can be avoided - but it is definitely not the end of the world if that needs to happen. My thought in this unique situation is to be forward about your work card, ask when they need a response by given that fact. For the other role that you are waiting for, it is also appropriate to ask when they will be making a decision by, as you have received another offer (might push them to respond quicker!) I have been in a similar situation, and I did let them know that I was waiting to hear back from someone else and let the other company know that I got an offer, and things moved a LOT quicker! May be worth that effort to try and move the timeline along!

Hi! This is a great question, but first, congratulations!! Receiving a role is definitely something worth celebrating! You do NOT need to take this offer right away - most companies will be understanding if you ask them until the end of the week to make a decision. It should also be completely appropriate to ask them when they would like a firm response by. In my experience, being honest about my prospects has benefitted me. Knowing that I have multiple interviews/offers has often shown the companies that I am qualified and am worth the wait. I would recommend approaching this as an opportunity not only for you to "buy" time from the company, but to also put forth YOUR value and worth to the company. The way the company responds to your request also speaks volumes to the type of culture they have. The end of the week is a few days - most companies will wait for the right person :) Good luck!