I was going to guess "minimum wage" which is $18.07 in San Francisco, but I decided to actually do a job search for "Warehouse Clerk" and found a nice opening for Disney that includes health insurance and requires no experience. It pays $28 an hour, which works out to about $58,240 a year*

* not counting vacation days that may or may not be provided or possibilities for overtime * simple math is $28 * 40 hours per week * 52 weeks per year

eligible for overtime though, adds up and on the plus side you never get to be at home when you do that to worry about what your home is like. halfway sarcastic.