My view is that it should be potentially considered as one of several viable locations.
Afterall, if something sudden does kick-off, there is a good chance many of us would be at work.
So if you are prepared at work, then you are already there.
A good alternative is obviously have your daily driver stocked.
The recent France shootings are a good example, they targeted folk at work, when they ran, they holed-up on an industrial estate after that and people couldn't escape from work.
When bombs started going off on trains and buses in London on 11/7 the best place to wait it out would have been to stay at work rather than risk public transport.
Luckily terrorism is a rare thing, but I understand mass shootings are a semi-regular occurance in the US when people 'go postal'?
My nearby (as mentioned earlier) is actually no-longer my primary employer, but it is a family business, my family, so I'm regularly there, know everyone, have a set of keys and store a few things there (mainly extra motorbikes). It is also 3 minutes walk from my house.
My regular work is also a secure facility due to the nature of some of our work, big fences, security, but it is in the city; so I would rather not hang around after the event.
I'd stay put until I knew more of what's going on, then workout which direction to go.
I've rambled on enough, I suppose to sum up my view;
Although it may not be the ideal BOL, you may be forced to bug in until something blows over.