Figures released in a Freedom of Information Request have revealed that officers in Lancashire Constabulary took thousands of days off for reasons including stress, PTSD, anxiety, depression, self-harm, substance abuse and schizophrenia.
The Police Federation blames staff cuts for the number of days off taken for mental health reasons.
As part of a cost saving reorganisation police officer posts will have been reduced from 3,658 in 2009 to 2,962 in 2017.