Table 1 The simplified model of calculating the components of the IAB Working Time Measurement Concept and how they add up to the total volume of work
Calculations for employees | |
Component of volume of work | Calculation |
Collectively agreed/customary volume of work | Daily working hours (wh) * working days in period (wd) * number of employees (E) |
− Volume of paid holidays | Paid holidays * wh * E |
− Volume of sick leave | (Adjusted) sick leave in % * wd * wh * E |
+ Volume of paid overtime | Daily paid overtime * wd * E |
+ Volume of unpaid overtime | Daily unpaid overtime * wd * E |
± Volume of flows on working-time accounts | Daily transitory overtime * wd * E |
− Volume of short-time work | Short-time worker * percentage loss of working hours per short-time worker * working hours in period (adjusted for sick leave) |
− Volume of bad weather (until 2006) | Affected employees * number of lost hours |
− Volume of strikes and lock-outs | Lost days by strikes and lock-outs * wh |
± Volume of adjustments for differences in the calendar | (1) Long term working hours (ltwh) = (long-term working days/working days in period) * coll. agreed/customary working hours in period (cwh) (2) − (cwh − ltwh) * (inverse) working-days-elasticities * E |
+ Volume of secondary jobs | Persons with secondary jobs * working hours in secondary jobs in period |
= Volume of work of employees (\(H_{E}\)) | |
Calculations for self-employed and family workers | |
Component of volume of work | Calculation |
Normally worked volume of work | Daily working hours (whs) * working days of self-employed and family workers (wds) * self-employed and family workers (S) |
− Volume of holidays | Holidays * whs * S |
− Volume of sick leave | Sick leave in % * whs * wds * S |
+ Volume of secondary jobs | Persons with secondary self-employed jobs * working hours in secondary jobs in period |
= Volume of work of self-employed and family workers (\(H_{S}\)) | |