To generalise
The verb for generalisation is generalise. As in "to generalise something".
work extent
Yes, in most locales, but you need to check your local tax laws to see how much and to what extent.
To the extent that your 401k distribution includes Employer contributions, a percentage of the distribution would be used to offset your unemployment benefit. If there are no Employer contributions there would be no effect on your benefits.
Wide range or extent.
That depends a lot on who you mean by "they".
how much effort you but into your work.
Difficult to generalise, but they're definitely rich...:)
Hitler's health deteriorated, his people were obedient (to generalise).
Extent of the reaction measures how far a reaction will proceed before establishing equilibrium state .
Notably large in size or extent.