Strikes are generally both a protest and an attempt to secure concessions from employers. Their effectiveness is premised on the costs of a loss of output and the damage of relationships with suppliers, customers and employees that a stoppage of work can result in. However, strikes are costly to employees too since they usually suffer a loss of earnings for the duration of the stoppage. Employees therefore often take alternative forms of INDUSTRIAL ACTION, such as overtime bans, which are considerably cheaper. The conduct of strikes by unions is regulated by LABOUR LAW in the UK. A postal ballot of employees must be held, and employers must be given advance notice of the strike, for the strike to be lawful (and hence TRADE UNION IMMUNITIES to be retained). SECONDARY ACTION is unlawful.
ACTS 1980,1982,1988 and 1990, TRADE UNION ACT 1984, TRADE UNION REFORM AND EMPLOYMENT RIGHTS ACT 1993. See LOCKOUT, PICKET.