"increased headcount" is correct and usable in written English.
It is typically used when referring to a business that has added additional employees to their team. For example, "We are delighted to announce that due to our recent successes, our company has had an increased headcount of 30 new employees."
HP says it signed 150 new customers for Autonomy in 2013, and has increased headcount at the division by 25% since the acquisition.
It's always tough to get budget approval for increased headcount.
That implies slower revenue growth, increased headcount and rising costs.
Yammer is also announcing that it has surpassed five million corporate users and increased headcount to more than 300 employees.
ISM reports cite strong hiring in New York City, testament to a recovered global trading systems that requires increased headcount in the financial services industry.
This is likely because of increased headcount and marketing costs versus other categories, lower margins, and lower public market comparable company multiples, which drive private valuations lower.
Research and development increased $117 million or 11% due to increased headcount-related costs.
As it turns out, companies using AI to also drive innovation are more likely to increase headcount than reduce it.
Ridding said the company also expects to increase headcount, though he did not specify numbers, as a result of the acquisition, with Nikkei keen to drive growth especially in Asia and North America.
SoftBank, whose business spans telecoms, the internet and robot technology, has promised to at least double ARM's UK workforce of 1,600 and to increase headcount outside the UK over the next five years.
Tesla has grown rapidly, increasing headcount by more than 15% since the start of the year, according to a company spokesman, so the cuts will leave the headcount higher than it was at the beginning of the year.
