India, Dec. 23 -- Major US technology companies are advising employees working on H-1B and other temporary work visas to postpone international travel. They are warning that growing visa processing delays could leave them unable to return to the United States for months, according to Newsweek.

The guidance, circulated internally by corporate legal teams and immigration law firms, comes as foreign workers consider holiday travel and year-end trips abroad. Employers have cautioned that visa stamping appointments at US embassies and consulates remain severely backlogged in several countries.

Internal memos reviewed by Business Insider and NPR show that immigration law firms working with major tech firms flagged the risk of lengthy waits ou...