Uasin Gishu’s wage bill stood at Sh3.02 billion, or 38 per cent of its Sh7.9 billion revenue during the year under review.
Baringo County spent Sh2.7 billion on employees.
In Samburu County, the wage bill rose to Sh1.6 billion from Sh1.3 billion.
Auditor-General Nancy Gathungu says six counties in the Rift Valley are grappling with a higher wage bill that has compromised development.
In her audit report for the year 2018/2019, she found out that seven years since the advent of devolution, Nakuru, Uasin Gishu, Nandi, Samburu, Baringo and Bomet are struggling to tame their rising wage bills and have failed to trim expenditure on non-essential items.