Fluor (FLR) reported Q1 adjusted earnings Friday of $0.14 per diluted share, down from $0.73 a year earlier.
Analysts surveyed by FactSet expected $0.62.
Revenue for the quarter ended March 31 was $3.66 billion, compared with $3.98 billion a year earlier.
Analysts surveyed by FactSet expected $3.89 billion.
The company's shares were down 7% in premarket activity.