This is Portuguese, but the idea is "to renew" (the agreements/leases) (recontratar). "Rehire" is not the correct term (for persons, mainly "contratar a alguien/un profesional"). This is land.
https://www.proz.com/kudoz/portuguese-to-english/law-contrac...


http://www.new-ag.info/en/country/profile.php?a=866
Some 50% of Mexico's agricultural land is held by communal farms, called ejidos. This system was set up in the early 20th century, when large private land holdings were redistributed to peasant co-operative groups, as a way of guaranteeing them livelihoods and pacifying the rural areas. However the ejidos system also had the effect of tying people to the land, since plots could not be sold or rented, and as the population grew so individual allocations shrank. Capital investments in the farms were also poor, as the communally held land could not be used as collateral for loans, and this combination of small size and low investment led inevitably to low productivity.

In the last twenty years the agricultural sector has undergone major reform. Before the 1980s Mexican governments had pursued a policy of self-sufficiency in staples, paying farmers twice the world price for their maize, and heavily subsidizing inputs such as fertilizer and irrigation. Following debt problems in the early 1980s, price supports were progressively removed, and a fifteen year transitional programme, called Procampo, has been put in place, to help staple commodity farmers to make the shift from protected to open market production. The programme gives fixed payments on a per hectare basis, in the hope that farmers will use this money to modernise their production. Farmers are free to grow alternative crops, or diversify into livestock, forestry, ecological or aquacultural activities, and still receive the direct payment. In this way the government hopes to move agriculture away from self-sufficiency towards exports. The ejidos system has also been reformed in a bid to increase farm sizes, with co-operatives now having the right to sell or rent their land.

317770009_The_Mexican_sugarcane_production_system_History_current_status_and_new_trends

https://www.researchgate.net/publication/257780629_The_Mexic...
There are 165,000 cane growers averaging nearly 4 ha or less in area per canegrower (small-scale farmers) contributed 61% of total sugarcane production in about 133,763 farms with barriers in sugarcane planting, cultivation, and harvest in a Land Tenure structure Ejidal or communal (74.5 %) and private (24.5 %) who supply cane to the sugar mills and trapiches for panela or jaggery, only a small percentage are larger than 10 ha. Sugarcane production value at 2010/2011 harvest season (zafra) was$2,152 million USD and cane prices have shown a considerable increase since the beginning of the past decade from $32.325 to $53.874 USD/t. cane; thereby in terms of averages was nearly 66.7 % higher than in 2001, as a result of a continuation of government policies that intervene in sugar chain fuelled by growth in sugar consumption, rising incomes and populations trying to motivate productivity despite the adverse effects of cost of transportation fuel, fertilizer, agricultural labor and seed cane.

https://www.sugarpub.com/feature/sugar-in-mexico-an-industry...
Mexico's land tenure system .... two groups - ejidatarios (communal landowners) and small private landowners.


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Note added at 3 hrs (2020-06-07 18:13:19 GMT)
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What is the synonym of renew?
SYNONYMS. revive, regenerate, revitalize, reinvigorate, restore, resurrect, rejuvenate, stimulate.