Effect of work schedule design on productivity of mechanised harvesting operations in Chile

New Zealand Journal of Forestry Science

Table 3 Effect of daily hours worked on average hourly productivity for mechanised processors operating in radiata pine plantations

Category	Sub-category	Hours worked per day	Average ** productivity (m³ hr^-1)	Standard error productivity (m³ hr^-1)	Change in productivity relative to 9-hour work day (%)
Season	Winter	9	58 a	0.2	0
		12	53 b	0.3	−9
		16	47 c	0.4	−19
		18	41 d	0.7	−29
	Summer	9	57 a	0.3	0
		12	50 b	0.4	−12
		16	41 c	0.6	−28
		18	37 d	1.2	−34
Forest Class*	A	9	72 a	0.2	0
		12	65 b	0.3	−12
		16	59 c	0.5	−23
		18	56 d	1.2	−28
	B	9	55 a	0.2	0
		12	51 b	0.4	−7
		16	47 c	0.5	−13
		18	45 d	0.9	−18
	C	9	41 a	0.2	0
		12	40 a	0.3	−1
		16	37 b	0.4	−7
		18	34 c	0.5	−12
	D	9	29 a	0.2	0
		12	28 a	0.3	−1
		16	27 b	0.3	−3
		18	25 c	0.6	−7

* Forest class refers to the average tree size in the stand; A = > 0.9 m³, B = 0.65 to 0.89 m³, C = 0.4 to 0.64 m³, D = < 0.4 m³.
** Shift lengths within each sub-category with letter codes that differ from letter codes of other shift lengths are significantly different at the p = 0.05 level.