I am of two minds on this idea.
On the one hand, I think it is an ideal location for caching supplies; in a locker, personal desk, office, etc.
On the other hand, unless you own the place there are limits. As well, many people (like myself) try to get jobs NEAR where they work. This means an incident that affects your home may well affect your work place too.
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.