"increasing specialization" is correct and can be used in written English.
Example sentence: Globalization is driving increasing specialization in the international job market.
In his book "What Technology Wants," Kelly writes: "Technology wants what life wants: Increasing efficiency; Increasing opportunity; Increasing emergence; Increasing complexity; Increasing diversity; Increasing specialization; Increasing ubiquity; Increasing freedom; Increasing mutualism; Increasing beauty; Increasing sentience; Increasing structure; Increasing evolvability".
In modern times, with increasing specialization, the disciplines of art and architecture have parted company.
Increasing specialization within the field resulted in a proliferation of journals and professional societies.
With increasing specialization, however, publishing became, certainly by the 19th century, an increasingly distinct occupation.
However, the increasing specialization of political activity did not bring an end to clientelistic practices.
Among the factors that influenced the growth of emergency medicine was the increasing specialization in other areas of medicine.
In an era of increasing specialization, she sees the Undiagnosed Diseases Program as an institutional atavism, a way to reconstruct the old-school generalist "on a multiperson level".
This change coincided with increased specialization in the social sciences.
First, with the increased specialization of labor, organizations see that expertise is distributed among their employees.
He is most proud of his all-around ability at a time of increased specialization in the league.
As Peter Lattman reported last week, New York University School of Law is retrofitting its third-year curriculum to allow for increased specialization.
