Not really about farewell or goodbye (as there is no 'well' and 'good' about the sentiments in it!), this is about your thoughts after being made redundant. Fair enough too!
Other songs like this one:
Take This Job and Shove It by David Allan Coe Very dry country ditty, the meaning of which is obvious from the title. Only for those people with a sense of humour!! How bitter would you be if you worked long and hard with no thanks??