just wanted to add my two cents...
i worked as a 'temp' in a contracted company for Agilent. Our team grew to over 50 people and we successfully helped agilent with a bunch of outstanding backorders. We thru our own parties and invited agilent to them. We were watched like hawks by managers so agilent wouldn't cut our contract. Toward the end of my time there, Agilent decided to throw a beer tasting party to celebrate their successful turnaround and increase of profits... somewhat due to our hard work.
Well signs went up to mention the party and in a big tacky red font read "for agilent employees only."
Some of our employees were pissed off after all we had offered them and after we basically kissed their feet. But oh well. Whatever.