Answer: legwork

AnswerCrossword Clue
LEGWORKMuch of a detective's job
LEGWORKOut-of-the-office detective duty
LEGWORKPreparatory research
LEGWORKTedious detective duty
LEGWORKInvestigator's data gathering
LEGWORKResearch that can't be done on-line
LEGWORKReporter's routine
LEGWORKPreliminary investigation
LEGWORKPounding the pavement, say
legworkactive physical work (as in gathering information) that forms the basis of more creative or mentally exacting work (as writing a book)
legworkwork that involves lots of walking