Our EVSE is on a heavy duty "time of use" contactor that shuts off when it hits the high rate and turns on at the low rate (the utility can also load shed and shut it off if they want). A lot of times I will get home and plug it in and it will start charging and then hit the on peak time and the evse is essentially "unplugged" and the can sits for a bit waiting and goes to sleep. If you don't change anything once the EVSE gets power again it will wake up the car and start to charge again, I have done this many times with no issues so far. I also often come home and plug in during the on peak time and once we hit the off peak the car will just start charging. I have never had any faults or warnings from the car doing this.
As was mentioned a regular light switch shutting off with the EVSE load on probably isn't the best for the switch, but being only 8 amps I don't think it is a safety issue, it may just wear out that switch sooner. You could swap that switch with a heavy duty 20a one if it does fail.
3 kw solar pv - XW6048 - eight L16's
4 ton GSHP
2003 VW TDI 180k miles - 52 mpg lifetime
evse level 2 - Clipper Creek HSC-40
2013 S model with QC package Mar of 2013
@70k miles - 56.56Ahr - 86 SOH - 82.55 Hx - 245 GID