Everyone has a different experience when asking their employer about a place to charge.
Since 2014, I have worked at 3 locations that allowed me to charge. Here is my story about some of the challenges.
When I first obtained my EV, I didn't need to charge at work since it was only 10 km away from where I lived. But when they had to do some renovations, I asked that they add electrical outlets (of any kind) to be installed outdoors. I explained all the benefits that were obvious to me and they did follow through with the installation. But their main reason was because once or twice a year, they host events outdoors and have to run extension cords through doorways.
While there were a few things that were less than ideal about this situation, I had no complaint since I didn't really use it more than once a month for longer trips immediately after work. But because of an equal treatment policy, the electricity was not free, and it was not dedicated EV parking. The small amount of electricity I used amounted to $20/year and while asking me to pay for it may sound absurd, their rationale was if I got free fuel subsidies, then some folks would demand equal treatment and ask for the same (bus tickets for instance) which would just be a headache for management.
Parking was a bigger issue since the outlets were right next to the employee entrance, which filled up first thing in the morning as the factory floor shift started at 6 a.m. (I worked during office hours and started around 8:30 a.m.) So by the time I arrived, it was generally impossible to park reasonably close to the outlets most days. Luckily there was a spot I could squeeze into and park illegally for a morning without blocking anyone in. Nobody complained about this and I didn't have to do it on a daily basis.
I have since changed employers who have been a little more accommodating, likely for a few reasons.
Due to the location being a longer distance from home, I ensured during the interview process that they understood I would require a place to plug in every day and especially during the winter.
As it is a very small company of less than 12 people, all were understanding and supportive of the EV life style which negated any attitudes of "special treatment" or inequity.
When I started we were at a tiny location with very limited parking. I had to park out back and run a cord under the garage bay door. This worked as long as I could move my car every time we needed to get in or out. This was not really an issue since I was able to use an available welding outlet for a high speed charge so I only needed to be plugged in for a few hours.
We have moved to a bigger location and renovated before moving in. Once again, it was an easy opportunity to bury the cost of an electrician and they installed a dedicated outlet outdoors for me. In the attached photos, you can see an EVSE that I upgraded myself and bolted to the wall. I also designed the sign and the charger holder. I can squeeze into a sweet spot were I do not block any bay doors.
Here is the take-away advice for folks who would like to charge at work:
If you don't have an EV yet but are planning to get one, give plenty of notice to your employer and work with whatever they can provide you. Offer to pay for the electricity and highlight the advantages of having EV charging capabilities. (Such as "It looks good for customers/investors.")
The best time to make this request may be when considering a new position, as this could be considered a condition of employment. (Be friendly about it though.)
If you are supplying the EVSE, make sure it is inexpensive. L1 is generally more than enough for an 8 hour day. Un-plug it and put it inside when not in use, or even better, hard wire it and bolt it to the wall. (I have never had an EVSE stolen.)
If you actually have an option as to where to put an outlet or charging station, put it as far away from any entrance as possible to prevent ICEing (and you need to walk more anyways).