Employment visa not valid

I went to Saudi last week fr umrah and cum back on Saturday Whn I enter in bahrain on checkpost they stop me becouse my visa is showing not valid so we talk in lmra office and extended it for 1 week OK, bt I am worrying abt is on invalid visa can I stay in bahrain till my employer pays there penalty becouse his cr is block now that's y my visa is showing invalid, or eles lmra make me blacklist? Please help me with ur suggestions, if his cr open visa automaticlly vaild? Or I have to leave bahrain after 1week?

Overstay doesn't lead to blacklist automatically. It leads to fines first.

Speak to your employer. Ask how long it will take to rectify the CR issue.  When a CR is deleted or other things, the visas are cancelled. They will have to be reapplied for.