From what I can find,
Trader Joes pays pretty good, compared to Walmart.
Here is what I have found on their wages.
http://www.glassdoor.com/Hourly-Pay/Trader-Joe-s-Hourly-Pay-E5631.htm
Here are reviews of the work atmosphere.
http://www.indeed.com/cmp/Trader-Joe%27s/reviews
Sounds better than Walmart to me.
Dave (A.K.A. Homebrew)