Historical clue formulations

• Work periods — 2023-09-01
• Work assignments — 2023-01-25
• Tours abroad, say — 2021-03-19
• Husbands one's resources — 2020-01-18
• Is closefisted — 2017-07-01
• Is miserly — 2012-02-08
• Work assignments — 2012-02-02
• Is parsimonious — 2010-04-11
• Work periods — 2006-10-29
• Periods on jobs — 2004-11-08
• Jobs of limited duration — 2003-01-28
• Jobs — 2001-05-12
• Restricts — 2000-05-20
• Turns, so to speak — 2000-04-23
• Is frugal — 1999-07-24
• Acts frugally — 1998-12-27
• Is miserly — 1998-10-20