Workers in Nokia Solutions Networks in Nigeria are on a three-day strike to protest against anti-labour practices by the management of the company, reports CommunicationsWeek. The workers are members of the Private Telecommunications and Communications Senior Staff Association of Nigeria. Okonu Abdullahi, general secretary of the association, said that the company had resorted to systematic casualisation of workers, seeking to substitute formal workers with casual workers. Abdullahi also accused the company of promoting unwholesome labour practices and alleged that it had abused the expatriate quota policy and was regularly replacing Nigerians with foreigners on jobs that could be handled by Nigerians. He added that Nokia had refused to give employment letters to former workers of a company that was acquired two years ago. The union stated that the workers would proceed on an indefinite strike at the expiration of the three-day warning strike.