SPM10655 - Statutory Sick Pay (SSP) - Calculating average weekly earnings

Calculating AWE where there is either a change of pay pattern or an irregular pay practice during the set period

Where an employee has a change of pay pattern, for example to both a weekly and a monthly pay day within the set period, each is calculated separately and then added together to establish the AWE.

Where an employee is usually paid at irregular intervals, for example because they don’t work for the employer everyday or they are paid on a commission basis only, calculate the AWE as follows; :

Note the first day the employee's PIW.


  1. Find the date of the last normal pay day before the first day the employee is sick. This is the lastday of the set period.

  2. Count back to the payday at least eight weeks from the date in 1 and come forward one day.

  3. Add together all the earnings paid in between the dates in 2 and 1 (inclusive)

  4. Work out the number of days between the dates in 2 and 1 (inclusive).

  5. Divide the figure in 3 by the number of days in 4 ( Do not round up or down to whole pence).

  6. Multiply the figure in 5 by 7 ( Do not round up or down to whole pence).

An example of the above

First day of PIW is 12.05.09


  1. Friday 08.05.09

  2. Eight weeks back is 13.03.09, forward one day is 14.03.09

  3. £1,499.9631

  4. 56 days

  5. £1,499.9631 divided by 56 = £26.785057

  6. 26.785057 multiplied by 7 = £187.4954