A job fair in Sunrise, Fla., June 26, 2025. Employers cut 92,000 jobs in February 2026, the Labor Department reported on March 6, and the unemployment rate rose to 4.4 percent; losses cut across nearly all major sectors, including health care, which was weighed down by a nurses strike in California. (Scott McIntyre/The New York Times) By SYDNEY EMBER Hiring fizzled in February, a sign of unexpected weakness in the labor market that sent warning signs flashing through the broader economy….