The meat packing industry handles the slaughtering, processing, packaging, and distribution of meat from animals such as cattle, pigs, sheep and other livestock. Poultry is generally not included. This greater part of the entire meat industry is primarily focused on producing meat for human consumption, but it also yields a variety of by-products including hides, feathers, dried blood, and, through the process of rendering, fat such as tallow and protein meals such as meat & bone meal.
In the United States and some other countries, the facility where the meat packing is done is called a slaughterhouse, packinghouse or a meat packing plant; in New Zealand, where most of the products are exported, it is called a freezing works. An abattoir is a place where animals are slaughtered for food.
The meat packing industry grew with the construction of the railroads and methods of refrigeration for meat preservation. Railroads made possible the transport of stock to central points for processing, and the transport of products.
Before the Civil War, the meat industry was localized, with nearby farmers providing beef and hogs for local butchers to serve the local market. Large Army contracts during the war attracted entrepreneurs with a vision for building much larger markets. The 1865–1873 era provided five factors that nationalized the industry:
- The rapid growth of cities provided a lucrative new market for fresh meat.
- The emergence of large-scale ranching, the role of the railroads, refrigeration, and entrepreneurial skills.
- Cattle ranching on a large-scale moved to the Great Plains, from Texas northward.
- Overland cattle drives moved large herds to the railheads in Kansas, where cattle cars brought live animals eastward.
- Abilene, Kansas, became the chief railhead, shipping 35,000 cattle a year, mostly to Kansas City, Milwaukee and Chicago.
In Milwaukee, Philip Armour, an ambitious entrepreneur from New York who made his fortune in Army contracts during the war, partnered with Jacob Plankinton to build a highly efficient stockyard that serviced the upper Midwest. Chicago built the famous Union Stockyards in 1865 on 345 swampy acres to the south of downtown. Armour opened the Chicago plant, as did Nelson Morris, another wartime contractor. Cincinnati and Buffalo, both with good water and rail service, also opened stockyards. Perhaps the most energetic entrepreneur was Gustavus Franklin Swift, the Yankee who operated out of Boston and moved to Chicago in 1875, specializing in long distance refrigerated meat shipments to eastern cities.
A practical refrigerated (ice cooled) rail car was introduced in 1881. This made it possible to ship cattle and hog carcasses, which weighed only 40% as much as live animals; the entire national market, served by the railroads, was opened up, as well as transatlantic markets using refrigerated ships. Swift developed an integrated network of cattle procurement, slaughtering, meat-packing and shipping meat to market. Up to that time cattle were driven great distances to railroad shipping points, causing the cattle to lose considerable weight. Swift developed a large business, which grew in size with the entry of several competitors.
The Pure Food and Drug Act of 1906 was the first of a series of legislation that led to the establishment of the Food and Drug Administration (FDA). Another such act passed the same year was the Federal Meat Inspection Act. The new laws helped the large packers, and hurt small operations that lacked economy of scale or quality controls.
Historian William Cronon concludes:
- Because of the Chicago packers, ranchers in Wyoming and feedlot farmers in Iowa regularly found a reliable market for their animals, and on average received better prices for the animals they sold there. At the same time and for the same reason, Americans of all classes found a greater variety of more and better meats on their tables, purchased on average at lower prices than ever before. Seen in this light, the packers' "rigid system of economy" seemed a very good thing indeed.
In the early part of the 19th century, they used the most recent immigrants and migrants as strikebreakers in labor actions taken by other workers, also usually immigrants or early descendants. The publication of the Upton Sinclair novel The Jungle in the U.S. in 1906, shocked the public with the poor working conditions and unsanitary practices in meat packing plants in the United States, specifically Chicago.
Meat packing plants, like many industries in the early 20th century, were known to overwork their employees, failed to maintain adequate safety measures, and actively fought unionization. Public pressure to U.S. Congress led to the passage of the Meat Inspection Act and Pure Food and Drug Act, both passed in 1906 on the same day to ensure better regulations of the meat packing industry. Before the Meat Inspection Act and the Pure Food and Drug Act, workers were exposed to dangerous chemicals, sharp machinery, and horrible injuries.
In the 1920s and early 1930s, workers achieved unionization under the CIO's United Packinghouse Workers of America (UPWA). An interracial committee led the organizing in Chicago, where the majority of workers in the industry were black, and other major cities, such as Omaha, Nebraska, where they were an important minority in the industry. UPWA workers made important gains in wages, hours and benefits. In 1957 the stockyards and meat packing employed half the workers of Omaha. The union supported a progressive agenda, including the Civil Rights Movement of the 1960s. While the work was still difficult, for a few decades workers achieved blue-collar, middle-class lives from it.
Though the meat packing industry has made many improvements since the early 1900s, extensive changes in the industry since the late 20th century have caused new labor issues to arise. Today, the rate of injury in the meat packing industry is three times that of private industry overall, and meat packing was noted by Human Rights Watch as being "the most dangerous factory job in America". The meatpacking industry continues to employ many immigrant laborers, including some who are undocumented workers. In the early 20th century the workers were immigrants from eastern and southern Europe, and black migrants from the South. Today many are Hispanic, from Mexico, Central and South America. Many are from Peru, leading to the formation of a large Peruvian community. The more isolated areas in which the plants are located put workers at greater risk due to their limited ability to organize and to seek redress for work-related injuries.
The industry after 1945 closed its stockyards in big cities like Chicago and moved operations to small towns close to cattle ranches, especially in Iowa, Nebraska and Colorado. Historically, besides Cincinnati, Chicago and Omaha, the other major meat packing cities had been South St. Paul, Minnesota; East St. Louis, Illinois; Dubuque, Iowa; Kansas City, Missouri; Austin, Minnesota; Sioux Falls, South Dakota; and Sioux City, Iowa.
Rail to truck
Mid-century restructuring by the industry of the stockyards, slaughterhouses and meat packing led to relocating facilities closer to cattle feedlots and swine production facilities, to more rural areas, as transportation shifted from rail to truck. It has been difficult for labor to organize in such locations. In addition, the number of jobs fell sharply due to technology and other changes. Wages fell during the latter part of the 20th century, and eventually, both Chicago (in 1971) and Omaha (in 1999) closed their stockyards. The work force increasingly relied on recent migrants from Mexico.
Argentina had the natural resources and human talent to build a world-class meat-packing industry. However its success in reaching European markets was limited by the poor quality control in the production of their meat and the general inferiority of frozen meat to the chilled meat exported by the United States and Australia, By 1900, the Argentine government encouraged investment in the industry to improve quality. The British dominated the world shipping industry, and began fitting their ships for cold air containers, and built new refrigerated steamers. When the Argentine industry finally secured a large slice of the British market, Pateros and trade restrictions limited its penetration of the Continent.
Meat in China moved from a minor specialty commodity to a major factor in the food supply in the late 20th century thanks to the rapid emergence of a middle-class with upscale tastes and plenty of money. It was a transition from a country able to provide a small ration of meat for urban citizens only to the world's largest meat-producer; it was a movement from a handful of processing facilities in major cities to thousands of modern meat packing and processing plants throughout the country, alongside the rapid growth of a middle-class with spending money.
Negative effects on meat packers
American slaughterhouse workers are three times more likely to suffer serious injury than the average American worker. NPR reports that pig and cattle slaughterhouse workers are nearly seven times more likely to suffer repetitive strain injuries than average. The Guardian reports that on average there are two amputations a week involving slaughterhouse workers in the United States. On average, one employee of Tyson Foods, the largest meat producer in America, is injured and amputates a finger or limb per month. The Bureau of Investigative Journalism reported that over a period of six years, in the UK 78 slaughter workers lost fingers, parts of fingers or limbs, more than 800 workers had serious injuries, and at least 4,500 had to take more than three days off after accidents. In a 2018 study in the Italian Journal of Food Safety, slaughterhouse workers are instructed to wear ear protectors to protect their hearing from the constant screams of animals being killed. A 2004 study in the Journal of Occupational and Environmental Medicine found that "excess risks were observed for mortality from all causes, all cancers, and lung cancer" in workers employed in the New Zealand meat processing industry.
The worst thing, worse than the physical danger, is the emotional toll. If you work in the stick pit [where hogs are killed] for any period of time—that let's [sic] you kill things but doesn't let you care. You may look a hog in the eye that's walking around in the blood pit with you and think, 'God, that really isn't a bad looking animal.' You may want to pet it. Pigs down on the kill floor have come up to nuzzle me like a puppy. Two minutes later I had to kill them - beat them to death with a pipe. I can't care.— Gail A. Eisnitz, 
The act of slaughtering animals, or of raising or transporting animals for slaughter, may engender psychological stress or trauma in the people involved. A 2016 study in Organization indicates, "Regression analyses of data from 10,605 Danish workers across 44 occupations suggest that slaughterhouse workers consistently experience lower physical and psychological well-being along with increased incidences of negative coping behavior". In her thesis submitted to and approved by University of Colorado, Anna Dorovskikh states that slaughterhouse workers are "at risk of Perpetration-Induced Traumatic Stress, which is a form of posttraumatic stress disorder and results from situations where the concerning subject suffering from PTSD was a causal participant in creating the traumatic situation". A 2009 study by criminologist Amy Fitzgerald indicates, "slaughterhouse employment increases total arrest rates, arrests for violent crimes, arrests for rape, and arrests for other sex offenses in comparison with other industries". As authors from the PTSD Journal explain, "These employees are hired to kill animals, such as pigs and cows that are largely gentle creatures. Carrying out this action requires workers to disconnect from what they are doing and from the creature standing before them. This emotional dissonance can lead to consequences such as domestic violence, social withdrawal, anxiety, drug and alcohol abuse, and PTSD".
Slaughterhouses in the United States commonly illegally employ and exploit underage workers and illegal immigrants. In 2010, Human Rights Watch described slaughterhouse line work in the United States as a human rights crime. In a report by Oxfam America, slaughterhouse workers were observed not being allowed breaks, were often required to wear diapers, and were paid below minimum wage.
At 1900 the dominating meat packers were:
In the 1990s the Big Three were:
- Smithfield Foods
- Tyson Foods
- JBS USA
- Cargill Meat Solutions
Outside the United States:
- Teys Australia
- JBS S.A. (Brazil)
- BRF S.A. (Brazil)
- Charoen Pokphand Group (Thailand)
- Imperial Cold Storage and Supply Company (South Africa)
- Maple Leaf Foods (Canada)
- Schneider Foods (Canada)
- Cargill Proteins (Canada)
- AFFCO Holdings (New Zealand)
- Continuous inspection
- Labor rights in American meatpacking industry
- Union Stock Yards, Chicago
- Environmental impact of meat production
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- NOW on PBS – Meatpacking in the U.S.: Still a Jungle Out There?
- "Meat Packing Industry Has Responsibility to Reform"
- "Beef's Raw Edges"