Jose was poor where his cousin was really rich. He was lazy, and a liar. Arnie wanted to make money so he got Jose and himself a job to clean a pool. They came up with a 70-30 spilt for the money they would make off the job. Jose only agreed to work with Arnie, his cousin, to teach him a lesson of not to be lazy anymore and feel how it feels to work hard.
So when they got to the Mr. Clemens house Jose stared right away trying to finish before the sun came out. Arnie on the other hand was "supervising" but he was actually just sitting in a louge chair doing nothing but eating snacks. Then Mr. Clemens came out to watch Jose work. He knew who was the hard worker there.
All of a sudden Mr. Clemens tumbled into the pool. Arnie ran away instead of calling 911 because he thought they would get in trouble for the incident. Jose stayed and helped and when people came to help they asked what happened. Jose started telling them what happened but then Arnie jumped in and lied about the situation. This shows that even after everything that happened Arnie's values didn't change. He was still a liar.