PKN`s Cost Per Employee (Local Currency) reached 8,822 PLN per month in 2015. This is 8.1 % more than in the previous year.
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| Company | Unit | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 |
| Grupa Lotos | PLN per month | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | 11,218 | ||
| PGNiG | PLN per month | ... | ... | ... | ... | 6,515 | 6,805 | 7,245 | 7,944 | 8,580 | ||||
| PKN | PLN per month | 7,409 | 7,530 | 7,741 | 8,176 | 8,319 |
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