SPSS- COMPARING 2 different samples

#1
Hi, I have collected data from 40 customers regarding their satisfaction, and also I have collected data from 10 employees regarding their job satisfaction. I want to test hypothesis to measure if employee satisfaction has impact on customer satisfaction. I have problem with choosing right technique and processing it statistically. Should I use regression, chi-square, anova or I cannot choose anything as sample sizes are different in size ?
Many thanks in advance