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How to calculate the number of reserve trainers needed to cater for absences


Is there a proven formulae to determine how many trainers are needed to cover for the absence of regular class trainers? The situation I wish to resolve is that of an organisation which runs ten courses of 19 classes per year and endeavours to have two trainers to a class at all times.
Obviously over this period trainers are absent on holiday, sick etc. Presently there is one trainer to provide cover to three classes but this has proved to be inadequate. Is anyone aware of a means of using average sickness and other absence periods to calculate more accurately how cover could be better achieved?
Tony Morris

2 Responses

  1. Sorry, no …
    I don’t have a formula but I would be very interested in knowing if there is such a thing out there.

    I tend to go with past experience, as I deal with projects and I know what has happened previously. It is a bit of a ‘gut instinct’ but it works.

    Sorry not to be more help, but please keep me up to date with your progress if you get anywhere near an answer.


    Jooli Atkins

  2. Formula for Absences

    I’d be very surprised if there is a ‘proven’ formula given that there are so many variables; what has happened in the past may not happen again.

    When people are going on leave it seems that you should program to avoid problems during their absence. When people report sick, you need someone you can call out at short notice … somebody on standby or alternatively, two parallel classes, both of which can be joined short term during unforseen absences.

    I think your answer is in meticulous planning rather than a super formula. However, if you find one, please tell us all.


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