2
general::
Phrase(s): *back in(to) (the) harness
Fig. back doing one’s job. (*Typically: be ~; get ~.) • I don’t look forward to getting back into the harness next Monday. • When my vacation is over, I have to get back into harness the very next day. • I’m not looking forward to having to get back in harness after my trip abroad.
McGrawhill's American Idioms And Phrasal Verbs