Is overtime Mandatory for skilled trades?

[bentonharbor]

Hi,
I was wondering if OT is mandatory for skilled trades (union represented) at D C Cook plant?  Is turnover high in skilled trades?  What union represents mechanics, electricians, etc?  When is the contract up? Do layoffs happen often? Any info greatly appreciated.
Thanks

[Chimera]

Hi,
I was wondering if OT is mandatory for skilled trades (union represented) at D C Cook plant? 

It's voluntary until you're forced.  Then it's mandatory.