wet work

noun

variants or less commonly wetwork

: work involving water or wet substances

All wet work, such as concrete, masonry, plaster, drywall and paint must be complete and dry.—

Daniel Boone, Floor Covering Installer, 1 May 2010

It is a frequent problem among individuals who perform "wet work" such as homemakers, bartenders, hairdressers, dental workers, and health care workers; repetitive wetting and drying of the hands leads to dryness and redness.—

Deborah A. Kedrowski and Erin M. Warshaw, Dermatology Nursing, 1 Feb. 2008

: work involving murder or assassination

—used euphemistically

… the intelligence service became infamous as a subcontractor for the K.G.B. and earned a grim reputation for its particular expertise in "wet work," the assassination of enemies.—

Andrew Higgins, New York Times, 25 Dec. 2013

… if you do wet work for the CIA … you probably don't want to drive to the job site in this huge, thinly veiled military vehicle.—

Al Haas, Philadelphia Inquirer, 19 June 1998