Charles Bukowski - American author

During episode 52 (the final episode) of 'The Bukowski Tapes', Buk talks about working briefly at a meat packing plant. The way he recalled it, it appeared to have taken place in the years immediately after WWII, but does anybody know when this brief employment occurred and where?

Also, did he ever write about this experience in a short story or in a poem? I vaguely remember him writing about working in a meat packing plant somewhere, but don't recall where?