It costs $5-$10 for the electricity to charge a car using level 2 charging. It is a trivial "perk" for an employee that costs an order of magnitude more per hour of work.
Often think about how the most expensive part of driving in Sydney, especially in an EV, is parking.
Not trivial if they a bunch of chargers. I work for the state in California and we have chargers at work but are charged for them around $.29/kWh which is cheaper than Tesla I think.
it costs me ~$5 to charge my car overnight at home (level-2) thanks to a residential electricity plan that offers very cheap night/weekend rates in exchange for more expensive rates at peak hours
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Never mind that, the cost of an urban parking space is considerable.
Here's a £50k London parking space: https://www.rightmove.co.uk/properties/136662200#/?channel=R...
While that's an extreme, I would expect the cost of any urban parking space with a low speed charger to be dominated by the land, then the charger one-off install price, and thereafter electricity use is a pretty trivial cost.
Sydney will also charge you 3,000 $AUS annually for central parking spaces: https://www.revenue.nsw.gov.au/taxes-duties-levies-royalties...