Workplace trouble

don't know how to put this without sounding like a lazy POS, but work lately has been getting worse and worse, at first it was always getting yelled at to work faster, but now it's "we put a kitchen timer on your tables to make sure you are cutting boxes faster" so we have to finish a pallet of boxes in a certain amount of time and if we don't we get our hours cut, and since its my only source of income at the moment, it has really stressed me out and made me feel ill all day, I don't know what to do, the boss and supervisor are basically turning into tyrants, I need this job and somewhat enjoyed it before this, but now is just turned into me feeling really stressed about work and making money, i understand that they just want shit done fast, but it felt like they carr mire about getting things done fast over their employees health and safety. don't know what to do.

Please if anyone has any suggestions on what I can do it would be really appreciated