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Personal flotation devices being worn on a navy transport . A personal flotation device (PFD; also referred to as a life jacket, life preserver, life belt, Mae West, life vest, life saver, cork jacket, buoyancy aid or flotation suit) is a flotation device in the form of a vest or suit that is worn by a user to prevent the wearer from drowning in a body of water.
The result of the system was that no one was able to profit from the labor of another — every individual ostensibly received the "full produce" of his labor. Adjustments were made for the difficulty and disagreeableness of the work performed, so that time was not the only factor taken into consideration.
Work or labor (labour in Commonwealth English) is the intentional activity people perform to support the needs and desires of themselves, other people, or organizations. [1] In the context of economics , work can be viewed as the human activity that contributes (along with other factors of production ) towards the goods and services within an ...
The donkey jacket is derived from the wool sack coat worn by workers in the 19th century, and the Oxford English Dictionary references the term as first used in 1929: "one with leather shoulders and back". [2] The jacket usually has two capacious side pockets, and sometimes an inside "poacher's pocket".
At the height of the labor trade, more than one-half the adult male population of several of the islands worked abroad. [ citation needed ] Over a period of 40 years, from the mid-19th century to the early 20th century, labor for the sugar-cane fields of Queensland , Australia included an element of coercive recruitment and indentured servitude ...
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The simplest definition of socially necessary labour time is the amount of labour time performed by a worker of average skill and productivity, working with tools of the average productive potential, to produce a given commodity. This is an "average unit labour-cost", measured in working hours.