Egypt is braced for a general strike on Saturday, the day which marks the one year anniversary of the ousting of former leader Hosni Mubarak.
The country needs more foreign investment to revive its economy after a year of political turmoil.
Protesters say their military rulers have not done enough to provide jobs.
Euronews correspondent Mustafa Bag said that there will be big demonstrations after Friday prayers.
They are likely to be some of the largest protests Egypt has seen since Mubarak was forced from power and replaced by the ruling military council.
A repeated demand of the protesters has been a quicker transfer of power from the army to a civilian government.