Blockade - (noun)
The surrounding of a place (such as a workplace) to prevent people or material coming in or going out.
Source: Adapted from Cambridge English Dictionary
Example of Use: As a result of the union boycott, in February 2005 Laval&Partneri Baltic Bygg withdrew from the construction of the Waxholm school and at the start of April 2005 it filed for bankruptcy. The firm’s owner maintains that the sole reason for the bankruptcy is the blockade lasting over three months.