Union members at an Ashburton rest home staged a three-hour picket on Thursday to protest what they say is a "shameful" pay offer from their employer.
The New Zealand Nurses Organisation, which has more than 50 members working at the Rosebank Private Hospital and Resthome, says they were offered a raise of 1.2% in exchange for a reduction in staff hours.
In a statement, Rosebank said that a dramatic increase in costs, coupled with limited, funding means it cannot make a better offer.
But union organiser Lynley Mulrine says the District Health Board gave the resthome a recent funding increase of almost 3%.
Ms Mulrine says any reduction in staff hours would compromise residents' care.