Chart 3. Index of aggregate hours worked for employees in the private nonfarm sector, new and old calculation methods, second quarter 2006 to fourth quarter 2021 (Q2 2006 = 100)
Quarter	Hours worked, new	Hours worked, old
Q2 2006	100.0	100.0
Q3 2006	100.4	100.4
Q4 2006	100.8	100.7
Q1 2007	101.1	100.9
Q2 2007	101.6	101.4
Q3 2007	101.5	101.3
Q4 2007	101.4	101.3
Q1 2008	101.3	101.2
Q2 2008	100.9	100.7
Q3 2008	99.9	99.7
Q4 2008	97.8	97.9
Q1 2009	95.3	95.4
Q2 2009	93.1	93.3
Q3 2009	92.1	92.4
Q4 2009	92.1	92.4
Q1 2010	92.5	92.5
Q2 2010	93.2	93.3
Q3 2010	93.7	93.9
Q4 2010	94.2	94.3
Q1 2011	94.4	94.5
Q2 2011	95.6	95.5
Q3 2011	96.0	96.1
Q4 2011	96.8	96.8
Q1 2012	97.5	97.4
Q2 2012	97.7	97.7
Q3 2012	98.2	98.0
Q4 2012	98.6	98.4
Q1 2013	99.4	99.1
Q2 2013	99.8	99.5
Q3 2013	100.2	100.0
Q4 2013	100.6	100.4
Q1 2014	101.0	100.8
Q2 2014	102.1	101.8
Q3 2014	102.8	102.4
Q4 2014	103.6	103.3
Q1 2015	104.1	103.6
Q2 2015	104.3	103.9
Q3 2015	104.6	104.6
Q4 2015	105.5	105.3
Q1 2016	105.8	105.5
Q2 2016	105.9	105.7
Q3 2016	106.5	106.3
Q4 2016	106.7	106.6
Q1 2017	107.0	106.9
Q2 2017	107.7	107.7
Q3 2017	108.0	108.1
Q4 2017	108.6	108.5
Q1 2018	109.0	109.1
Q2 2018	109.7	109.9
Q3 2018	110.2	110.1
Q4 2018	110.3	110.2
Q1 2019	110.7	110.6
Q2 2019	111.2	110.9
Q3 2019	111.3	111.1
Q4 2019	111.2	111.2
Q1 2020	109.9	110.2
Q2 2020	96.2	97.3
Q3 2020	102.8	103.8
Q4 2020	105.0	106.0
Q1 2021	106.1	107.2
Q2 2021	107.4	108.3
Q3 2021	108.4	109.5
Q4 2021	110.0	110.6
Note: The “Hours worked, new” series is all-employee hours calculated using the new method (all-employee hours paid, with a paid-time-off and off-the-clock hours adjustment); the “Hours worked, old” series is all-employee hours calculated using the 2004 method; Q1 = first quarter, Q2 = second quarter, Q3 = third quarter, and Q4 = fourth quarter. Source: U.S. Bureau of Labor Statistics.