All work and no play makes Jack a dull boy proverbial saying, mid 17th century, warning against a lifestyle without any form of relaxation.
if you won't work you shan't eat proverbial saying, mid 16th century, in which essential sustenance is seen as a reward for industry; an earlier related biblical reference is, 2 Thessalonians 3:10, ‘If any would not work, neither should he eat.’
it is not work that kills, but worry proverbial saying, late 19th century, meaning that direct effort is less stressful than constant concern.
work expands so as to fill the time available proverbial saying, mid 20th century; the view, which was formulated by the English historian and journalist C. Northcote Parkinson (1909–93), is commonly known as Parkinson's Law.
See also the Devil finds work for idle hands at devil, the end crowns the work, the eye of a master does more work than both his hands, many hands make light work, nice work if you can get it, a woman's work is never done, works.