A workplace holds a car for about four hours. Nothing else we measure comes close. That makes charging the cheapest per-head benefit most employers can add, and it makes the groundwork for a fleet cheaper to lay now than later. What it does not make is a retail business, and this page will not pretend otherwise.

Level 2 is slow and cheap, which is exactly right when the car is there until five. Per employee reached, it costs a fraction of the benefits it sits alongside — and it is visible in the car park every single day, which almost nothing else on the list is.
Depot charging is the part of fleet electrification with the longest lead time, because it is electrical work and utility coordination rather than a purchase order. Putting capacity in while the lot is already open costs a fraction of coming back for it.
Your lot is empty from six in the evening until eight in the morning, and all weekend. That is more than half the week in which the same hardware could be serving the public instead of sitting idle — if the location suits it.
On a hotel or an apartment community, charging brings people who then spend money on the property. At an office it does not: the people are inside working, not shopping, so there is no second revenue stream to add and we do not model one. If a campus already has a cafe or a market with the room and the footfall to justify it, that is worth a conversation — but it is the exception, and we would rather say so than sell you a number that does not exist.
They are often on the same site and they are almost never the same installation. Worth separating before anyone prices anything.
If the public-access idea is the interesting one for your site, that is a fast-charging question rather than a workplace one — the DC side is here, and the free evaluation will tell you whether your address actually draws traffic.
The Level 2 value model is free and runs on your own numbers. If a workplace install does not earn its keep on your property, it will say so.