The resident doctors are protesting failure of the federal government to implement the Memorandum of Understanding it signed with them over a hundred days ago.
The union is protesting about the payment of a national minimum wage and the use of a government payroll scheme.
A strike by federal civil service workers could disrupt public services across the country.
An official says it is an injustice for the government to increase electricity tariff and fuel prices.
A nationwide NLC strike backed by key affiliates could shut down parts of the economy.
