A response from IZM is expected within three days.
The head of the LIZDA, Inga Vanaga, said that as of September 19, there would be an open-ended strike and no teachers at their workplaces. The strike will cover education workers, ranging from kindergarten to universities.
LIZDA estimates that up to 10,000 education workers could participate.
Earlier this summer, teachers protested near the Saeima to get their demands met, but it failed.
The three main requirements of the protest were a balanced workload, a schedule for increasing wages in accordance with the principles set out in the Education Law, and a fair funding mechanism.