The looming threat of more hospital beds closing could be brought to a halt as Victorian nurses and midwives vote on a revised pay offer.

Australian Nursing and Midwifery Federation members will meet on Wednesday in Melbourne and eight regional sites to vote on a 28.5 per cent wage increase over four years.

Union members knocked back an in-principle agreement in May after voting to begin industrial action including shutting down one in four hospital beds.

Under the initial agreement, workers were offered a wage boost of 18 to 23 per cent over four years but it was rejected due to a number of uncertainties.

The union said the latest offer provides dates for all increases and restores relativities between all classifications by the end of the agreement.

The Victorian government and several agencies remain locked in pay disputes with firefighters, paramedics and regional train workers.

In late May, Victoria Police and the force's union struck an in-principle agreement to phase in a nine-day fortnight no later than January 1, 2029, and give the workforce a 16 per cent pay rise over four years.