lockout

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The withholding of work from employees and closing down of a workplace by an employer during a labor dispute.

from The Century Dictionary.

• noun The act of excluding a person or persons from a place by locking it up; the condition of such exclusion.

from the GNU version of the Collaborative International Dictionary of English.

• noun The closing of a factory or workshop by an employer, usually in order to bring the workmen to satisfactory terms by a suspension of wages.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun The opposite of a strike, a labor disruption where management refuses to allow workers into a plant to work even if they are willing.
• noun The action of installing a lock to keep someone out of an area, such as eviction of a tenant by changing the lock.
• noun computing A situation where the system is not responding to input.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• verb prevent employees from working during a strike
• noun a management action resisting employee's demands; employees are barred from entering the workplace until they agree to terms