Happiness and Satisfaction are closely related, but aren’t synonymous. Thus, the question arises that what are the common and uncommon constituents of the two. What are the salient characteristics of these concepts?
Satisfaction is the degree of contentment, a person received when his exception meets up to the level which he set. On the other hand happiness shows the mental well being of an individual, it range from contentment to intense joy.
I think Happiness is the outcome /consequence of satisfaction because satisfaction can be of many types (i.e Job & career etc) and these are dimensions of QWL, so according to spillover theory effect one domain spills over to other.
"The considerable interdependence among domain variables suggests that happiness is based on satisfaction in a number of different parts of life, that the employee whose happiness is significantly related to job satisfaction is also likely to experience satisfaction in other parts of life as well " (Weaver 1974)