Production and exports so far unaffected as some foreign oil workers evacuate, following the U.S. assassination of Qassim Soleimani and Abu Mahdi al-Mohandis.
As Iraq throttles back production to meet OPEC quota, higher global oil prices help offset reduced exports.
Order reflects new labor law mandating retirement age of 60 except for ministers.
A project to double the Nassiriya field's production capacity is tied to a federal budget likely strangled by political fighting.
The Nassiriya oil field and Dhi Qar refinery are operating again after the Oil Ministry took them offline temporarily to de-escalate protests.
Oil Ministry takes an 82,000 bpd field offline as de-escalation tactic in response to protests; overall production and exports unlikely to be affected nationwide.
The killing of an oil facilities policeman at a Khabbaz well comes as insurgent attacks are on the upswing.
State-operated fields in Basra throttle back production as Iraq moves to support an OPEC agreement and bolster global oil prices.
A long-time central player in Kurdistan's oil industry, the CEO of KAR Group has already become a trusted advisor of KRG Prime Minister Masrur Barzani.
Thousands of Islamic State militants are believed to be in the area, exploiting security gaps.
