Historical clue formulations

• Works up a sweat — 2025-06-28
• Struggles — 2024-08-23
• Works and works and works — 2022-08-09
• Plugs away — 2022-02-19
• Grinds away — 2021-12-05
• Works hard — 2021-06-08
• Works hard — 2020-05-26
• Labors — 2020-02-02
• Plugs away — 2018-09-21
• Works hard — 2017-07-04
• "Through many dangers, ___ and snares I have already come" ("Amazing Grace" lyric) — 2016-06-26
• Works hard — 2015-08-03
• Works — 2015-01-18
• Drudges — 2014-11-15
• Works long and hard — 2009-07-20
• Doesn't do the job easily — 2006-06-24
• Slaves — 2006-06-18
• Slaves — 2006-02-04
• Breaks one's back — 2001-08-21
• Slaves away — 2001-08-20
• Works hard — 2001-05-01
• Slogs — 2000-05-05