The strike by nurses and senior doctors has crippled public hospitals, with non-emergency patients turned away and some babies stillborn due to lack of adequate medical care.
ZINA president Enoch Dongo said nurses wanted to give Vice President Constantino Chiwenga, who was in August appointed health minister, a chance to resolve the dispute.
"When you have a crisis sometimes you need to give people a chance to resolve it. After sometime we will review this decision," Dongo told Reuters.
"So we are telling our members to report for work but only if they have transport money and if there is PPE in hospitals."
Dongo said the lowest paid nurse earned 6,000 Zimbabwe dollars ($73) in salary and allowances monthly. The state statistical agency says an average family of five needs at least 15,573 Zimbabwe dollars to be not considered poor.
Chiwenga has said the government would soon table a pay offer for the health sector and stop paying medical bills for cabinet ministers and senior officials who seek treatment abroad to save on scarce foreign exchange.
Zimbabweans are growing impatient with Mnangagwa, who promised to revive the economy when he took over from Robert Mugabe after a coup in 2017. Mnangagwa says the economy is being sabotaged the opposition and some Western countries.