In recent years many countries of the world have been faced with the problem of how to make their workers more productive．Some experts say the 1 is to make jobs more varied(多样的)．But do more varied jobs 2 greater productivity? There is evidence to suggest that 3 variety certainly makes the worker's life more enjoyable, it doesn't 4 make him work harder．As far as increasing productivity is concerned, then, 5 is not an important factor．
Other experts feel that giving the worker 6 to do his job in his own way is important, and there is no doubt that this is true．The 7 is that this kind of freedom can't easily be given in the modern factory with its complicated(复杂的)machinery which must be used in a 8 way．Thus while freedom of choice may be important, there is usually very little that can be done to 9 it．
Another important 10 is how much each worker 11 to the product he is making．In most factories the worker 12 only one small part of the product．Some car factories are now 13 with having many small production lines rather than one large one, so that each worker contributes more to the production of the cars on his 14 ．It would seem that not only is degree of worker contribution an important factor 15 it is one we can do something about．
To what 16 does more money lead to greater productivity? The workers themselves certainly think this is 17 ．But perhaps they want more money only because the work they do is so boring． 18 just lets them enjoy their spare time more．A 19 argument may explain demands for shorter working hours．Perhaps if we 20 making their jobs more interesting, they will neither want more money, nor will shorter working hours be so important to them．
