Given how it's framed it seems like the manga is teasing her retiring after marrying her co-worker. Since he's literally there "presented" as the willing option ...
... but, seriously, he should retire and do the housework, while she keeps on working. Clearly she's the more capable one. ^^
thanks a bunch for the change in the puns. they intent of translating them was nice, but for stuff like "nile crocodile" where the untranslated form lends itself better for the phonetics is nice (and also adding the translated joke at the side works very well).
also thanks for explaining the other joke, very much appreciated