Based on the past history, the company trend of this location appears to be a staff reduction in and around the month of May, then another round of fresh hiring sometime late July - September... with the possibly of several rounds of new recruits being picked up in the 4th quarter, depending on the economic demands at the time.
As a general barometer, you can pay attention to Apple, Pegatron news as well as all its suppliers. Furthermore, watch the Apple stock price! When the stock price is stable at $100 and above, business appears vibrant, good news may be coming soon, and hiring continues at a steady pace. On the other hand, if the Apple stock price dips below $100, watch out, there could be some negative financial news that may impact the location.
All in all it may just be a coincidence, but I believe a multiple of coincidences is the reason the confluence of pertinent factors is recognized and a historical trend is thus established.