The protest reached serious proportions when an official strike was declared on 20 June.

In the current political climate, an official strike would count under Condition 17 but not an unofficial one.

There were four official strikes in the history of Buchans mining operation.

Whilst some trade unions make payments to members who are on an official strike there is no requirement to do so.

Official strikes have fallen into two broad categories.

Note that despite the fact that union workers are being threatened with losing their collective bargaining rights, no official strikes have been called.

The umpires refused to report for Spring Training, marking the beginning of their official strike of 2006.

On Day 31, Jade received her first official strike for discussing nominations with Adele.

Wildcat or official strike action?

An attempt to emulate such progress in 1987 ended in almost three months of wildcat action followed by a damaging two-week official strike.

An official strike is a strike organised and recognised by a labour union, as opposed to an unofficial strike at grassroots level.

- A discussion of the relative merits of official strike action versus unsanctioned wildcat action.

The strike committee regularly issued an official Strike Bulletin to counter the expected anti-union bias in mainstream newspapers.

The UK government makes the presumption that workers on official strike action are being paid strike pay, and so they may not be entitled to state benefits.

'In every case, whatever the length or size, benefit was about twice as likely to be paid out in official strikes as in unofficial strikes.'

Housemates Jason, Marco, Nadia, Vanessa, and Victor were all given official strikes by Big Brother due to the events of the night.

The action clearly began among the rank-and-file, and was endorsed only belatedly by teamsters higher up the organizational chain, who waited for several days to sanction an official strike vote.

The TUC produced its own paper, the British Worker (subtitled Official Strike News Edition) to attempt to counter it.

The initial reaction among general managers and managers attending the meetings was that reversion to the official strike zone would favor pitchers because hitters would have a larger area to cover.

Pat Gillick, general manager of the Toronto Blue Jays, who is a member of the committee, said the intention in shrinking the official strike zone was to induce umpires to call more strikes.

Jean-Michel Pretre, a local Guadeloupean prosecutor, has speculated that the youths, who were operating independently from the official strikes, may have mistaken Bino for a plainclothes police officer when they opened fire.

Employees who strike risk dismissal, unless it is an official strike (one called or endorsed by their union) in which case they are protected from unlawful dismissal, and cannot be fired for at least 12 weeks.

Sorry, but I remember that for decades, British manufacturing was in serious decline due to official strikes, unofficial strikes, sympathy strikes, demarcation disputes, blanket refusals to co-operate with the introduction of new machinery etc.

This is not an official strike and, as the music has been licensed to the BBC by PRS, there is no legal impediment to the playing of the music in question by Radio Cymru."

This was the first official strike by London bus drivers since 1958, and prompted Harry Cohen, the Member of Parliament for Leyton and Wanstead, to issue an Early day motion in the House of Commons.