LONDON — To a chorus of complaints from employers, Britain said on Wednesday that it would slam the door on low-skilled workers as it moved to cut overall immigration by locking migrants from Europe and elsewhere out of sectors like catering, construction, senior care and hospitality.

Under new post-Brexit rules starting next January, migrants will have to meet a number of criteria to qualify for a work visa, including specific skills and an ability to speak English.

Applicants will also be required to have a job offer with a minimum salary threshold of £25,600, about $33,300. (Salary requirements are lower for certain job categories with critical shortages, such as nursing.)

That was lower than the £30,000 figure that some employers feared. But it could nonetheless have a chilling effect on recruitment for jobs that Britons seem to want to avoid, and at a time when many economists say the country is effectively at full employment.