Oum Sok earns $8 from the association for a day's work,plus any tips.

VOA: standard.2010.06.14

Good tippers include businessmen, pickup truck drivers and anyone who has had to work for tips before.

FORBES: How To Win Friends And Influence People With Tipping

But I consulted with two of my best career advice sources, and they thought he had some good ideas, though his tips may be most useful for people who work for themselves or run small businesses.

FORBES

What are your best tips for standing out in a positive way at work?

FORBES: Tips from the Trenches: Five Ways to Further Your Career