Laziness is an intangible and therefore rarely allowed as a reason for firing in a union situation.
One falls asleep...maybe. But basic laziness and therefore less efficiency is very difficult to overcome in a termination case....and usually resultrs in a minor reprimand.
That being said...we have lazy people on assembly lines...maybe 1 out of 100 of them (just a guess)....but such is why we open boxes with missing parts. Big deal...they will send us the missing parts.
But you want the chance of one single lazy person involved in national security?
I have been involved in the termination of union represented government employees protected by the Peace Officers Bill of Rights.
Anyone caught sleeping on duty was immediately placed on paid leave, and fired after proper due process (see Skelly & Weingarten rulings).
Discipline starts with verbal notice, documented by a supervisor; followed up by a performance reminder if the verbal notice is not enough. Next, the supervisor under guidance from the manager provides the employee a counseling memo.
If this is still not enough, a written reprimand is given to the employee and becomes a permanent part of thier personnel file.
If the behavior does not change, and the above steps are followed and documented suspension w/o pay or termination is recommended to the hiring authority.
BUT, before any of this happens, a government employee is hired as a probatonary empolyee (most times for one year) and during this time can be terminated without cause. There is no appeal, no union representation or other protection during the time they are on probation.
A permanent peace officer who refuses a lawful order can be placed on leave, and would be placed on leave and given a Skelly Notice under the circumstances suggested above.