The information requested falls within the responsibility of the UK Statistics Authority. I have asked the authority to reply.
Letter from Joe Grice, dated March 2014
In the absence of the Director General for the Office for National Statistics, I have been asked to reply to your Parliamentary Question asking for the estimate of the number of people in (a) Corby and East Northamptonshire constituency, (b) Northamptonshire and (c) the East Midlands who have jobs which primarily require working (i) during the day and (ii) at night. 189427
The Labour Force Survey (LFS) provides estimates of people working particular shifts. For the period April-June 2013 it is estimated that 32,000 people in the East Midlands worked permanent night shifts. This does not include people who occasionally work night shifts. It is not possible to estimate the number who primarily work during the day as this is not asked on the survey.
Employment estimates for Corby and East Northamptonshire constituency and Northamptonshire are available from the Annual Population Survey (APS). However, estimates relating to shift working are not available from this source.
As with any sample survey, estimates from the LFS are subject to a margin of uncertainty. It is estimated that the true value is likely to lie between 21,000 and 43,000.