How long should I wait before following up with the company on an official written offer after receiving a verbal offer?
Here are the facts:
Very large global organization - I'm interviewing to work in the USA Division [say 3000-5000 employees]
First discussion: With HR two months ago - it was general info gathering by HR including if I was ok with their salary range [I told them I was] and HR had me text my current salary [I couldn't say it at the moment of the call as I was at work]
Second discussion: Roughly two weeks after the 1st discussion - Phone interview with the person who would be my boss which went great. Received an email from HR a couple of days later, that another interview would be scheduled sometime in the next two weeks.
Note: between the 2nd discussion & 3rd discussion - the Corona Virus has made most of the USA go into lockdown and into a work from home scenario. Not only am I part of that scenario, so is the organization I'm interviewing.
Third Discussion: ~4 weeks from the prior phone interview - Skype interview with future boss above, the next level boss and SVP. Went great from my perspective.
Fourth Discussion: 4 days after above - this was on the Phone with HR. HR stated how well it went, stated that they wanted to offer me a position and if the salary range discussed in the 1st discussion was still adequate [I said it was]. She asked if I could start in early May. I said yes. She said for me to expect a written offer by the end of the week.
The end of that week has come and gone without any communication.
Somewhere during all of this but I just don't recall when, I'm presuming it was either right before the 2nd or 3rd discussion, HR stated that they finally obtained approval to fill this position.
Even when I factor in the Corona Virus and the work from home factor for those involved in the hiring decision,
How long should I wait before doing a follow-up email with my HR POC?
Edited to add: One thing that I noticed, they did not ask for references and I know for a fact that I have not provided any references. Does anyone else find that odd?