"I think there are going to be hard choices governments are going to have to face, either to open up in areas where they actually need workers, and some do involve some lesser-skilled occupations, or probably have to face some strong pressures with respect to irregular migrations,"

VOA: standard.2010.01.20

Shift workers whose sleep is disrupted by working at night or working long or irregular hours also face increased risks.

CNN: How to combat drowsy driving

High persistence is essential for irregular warfare, such as we face today.

CENTERFORSECURITYPOLICY: Where are the carriers?

He said the numerous lacerations to her face had been caused by "blunt force trauma" inflicted using an "irregular shaped object".

BBC: Rachel Manning 'strangled and hit 10 times'