How to add more then one calendar from a same google account

The only way I've been able to do this (given that my employer will not allow my iPhone, etc. to connect to Exchange) is to have my primary calendar on my Google Calendar account be my work calendar, use the Google Calendar Sync application on my workstation at the office (always running) to sync from Outlook to Google (it supports only one calendar on Google's side, so whatever it chooses to sync with is your "primary" calendar and, thus, your work calendar), and sync my iPhone with my Google Calendars (see here).

It's not the most elegant solution, so I really hope someone posts something better that I can implement. But so far it's working just fine syncing meetings from work to my phone (one way, I believe... never tried to schedule a meeting from the phone).

It's possible that, for some reason, push can't go through. In those situations, your iPhone will fall back on the fetch schedule. Go to Settings->Mail, Contacts, Calendars->Fetch New Data and make sure that you select the most frequent Fetch, which is 15 minutes. It's certainly a far cry from the instantaneity of push, but you shouldn't have to wait more than 15 minutes for stuff to come through.

Also, you should check under Advanced just in case your schedule for your Google account was changed for some reason - it should be "Push".