Mercury is about to retrograde from August 20 to September 12, and once it does (and even two weeks before it does) Mercury out of phase will increase the likelihood for miscommunications.
Mercury, the planet of communication, perception, and decision-making, will go retrograde August 20, and you will begin to feel the slowdown as early as August 6 or so. You cannot sign contracts, announce big decisions, or give a final answer on any big decisions because too much is in flux.
There is an exception to the "never make a decision while Mercury is retrograde" and that is if you are going back to your past to reunite with someone who was important to you, say in work or in love. If your old boss wants you back, it's fine to say yes. If you pine for your old love, you can go back to see if you can reconcile now. These things happen when planets orbit back to old positions - we get a second chance at things.
The last retrograde that we had was back in April. If everyone remembers, everything was completely off! I truly believed in it as I could not for the life of me make a decision on if I should move to Miami or not. The exact day that I made my final decision was on May 11th, coincidentally the day Retrograde ended for that period. Please be wise and think through your decisions this month!