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		| Junwook  Yoo and Igor  Semenenko | 
	
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		| ''Performance measure aggregation – two action levels'' | 
	
		| ( 2021, Vol. 41 No.2 ) | 
	
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		| In practice, effort is often measured in two levels due to the simplicity. When employees' actions are restricted to two levels, this study shows that the basic measures can be aggregated into a one-dimensional sufficient aggregate without losing any information from the basic measures. The format of the one-dimensional sufficient aggregate is determined only by the statistical properties of the basic measures and the one-dimensional sufficient aggregate can be uniformly used regardless of organizational particulars. By using the one-dimensional sufficient aggregate, complexity of performance evaluation systems can be reduced and efficiency of motivating employees through performance evaluation can be substantially improved. | 
	
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		| Keywords: aggregation,  performance measures,  sufficiency,  performance evaluation | 
	
		| JEL: M1 - Business Administration: General 
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		| | Manuscript Received : Nov 16 2020 |  | Manuscript Accepted : Apr 09 2021 | 
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