Stop paying for sandwiches: only 9 of 43 event buttons are worth your gold
Your workers bring you events every day, and most come with a button that costs gold. I priced all 78 of them: most paid buttons lose you money. The picture below is the whole answer; open a section for the proof.
THE SHORT VERSION
1 wage-day = one day of that worker's pay, about one day of his work. A +10% boost for 2 days is worth only 0.2 of a day.
Only 9 of 43 paid buttons give back more than they cost. The sandwich gives back a quarter of its price.
The biggest wins are free: let your workers become friends (+15% each).
:POOR: WHAT DOES A WAGE-DAY BUY?
A paid button costs days of that worker's wage. +10% for 2 days buys back 0.2 of a day. Average worker today: 2.13 gold a day.
:CatEatingChips: THE SANDWICH
You pay 2.13 gold and get back 0.53. Press "Keep feeding it sandwiches" instead: it is free.
:Nono: NEVER PAY FOR THESE
All of them lose gold in every case I tested. "Pay the inspection fee" gives you nothing at all.
:YesYes: PAY FOR THESE
Kevin pays back 4 times its price, the compliment twice. The trip home only for a Homesick worker.
:CoupleLove: ALWAYS PLAY MATCHMAKER
Old Friends work +15% each: about 19 gold a month, for free. Sweethearts +20%.
:MadgeLate: ANSWER BEFORE IT EXPIRES
After 36 hours the game presses a button for you, and for these it is the risky one.
:Freaky: THE STRANGE MOOD
Say yes only if your good is cheap (teal). It wants 40 raw or 12 manufactured units of it.
:Praying: WHAT MAKES YOUR CHANCE?
Base + 2% per level of your Management + your worker's Luck and mood. 35% of players have Management 0.
:BusyCat: HOW MANY EVENTS?
3 workers bring 1 a day, 12 bring 2, 27 bring 3. Answering them right is worth about 4 gold a day.
:pepepoint: ALL 78 EVENTS: WHAT TO PRESS
Teal = press it. Gold = what you come out ahead on average, after the price.
Numbers: the game's own event table (31 October, v0.27.3) and the live game: 174,867 employees, wages from employee tax, 400 sampled players. Average company: 2 workers paid 2.13 gold a day. Gold figures are averages. Corrections welcome in the comments.