Since 2006 certain previously excluded workers can opt into the system on a voluntary basis.

Many experienced workers have opted out of staffing polling places this year for fear of getting involved in protracted and bitter disputes.

Their health failing, or their dreams of amassing sizable savings broken, these workers opt to return home to simpler lives in the countryside.

All other shop and betting workers can opt out of Sunday working if they want, giving three months' written notice without reason.

On an increasing basis, workers are saying "no" to long commutes and opting to work at home.

There is concern that some workers could opt out of pension schemes altogether rather than pay the increased contributions.

Just last week, Ford Motor announced that 30,000 workers had opted for deals worth up to $140,00 to leave.

Productivity has declined because many workers have opted for life in the city, even though they continue to support their community.

As a final nail in labour's coffin, each worker can opt out of union dues.

German is the most popular, though adventurous workers are opting for Norwegian, Greek and Russian.