Before the recent removal of quarantine measures, many workers had expressed frustration over the city’s onerous [ˈɑnɚɹəs] travel restrictions, which at one point required up to 21 days of hotel quarantine.

onerous
adj [ˈɑnɚɹəs]

Onerous means "involving, imposing, or constituting a burden." It typically describes something that is difficult and unpleasant to do or deal with.

via Middle French, from the Latin adjective onerosus, "burdensome." That word, in turn, was hitched to the noun onus, meaning "burden" (source too of our word onus, which usually refers to a burden or responsibility).

English