Ensco will reduce its onshore support jobs by a further 14% in a bid to streamline costs amid the continued decline in oil price.
The offshore driller previously said earlier this year it had halved its onshore workforce by 50%.
Ensco also plans to reduce its reporting structure in its global operations from five to three business units.
The company has also increased its offshore labour cost savings by a further 6%.
Ensco currently employs an estimated 8,500 people globally.
The move is expected to help generate a combined savings of $57million on an annual basis, the company said.