diff --git a/src/ects.py b/src/ects.py
new file mode 100644
index 0000000..e746c12
--- /dev/null
+++ b/src/ects.py
@@ -0,0 +1,26 @@
+import pygame
+
+from src.settings import START_ECTS_VALUE, ECTS_UPDATE_INTERVAL
+
+class ECTS:
+    def __init__(self):
+        # total amount of ECTS the player has at the beginning
+        self.ects_balance = 0
+        # start amount of ECTS player gains ber interval at the beginning
+        self.ects_per_second = START_ECTS_VALUE
+        # timer when last ECTS was given to player
+        self.last_update_time = pygame.time.get_ticks()
+
+    # check if ECTS should be added
+    def update(self, is_at_desk):
+        current_time = pygame.time.get_ticks()
+
+        # if player is at desk and interval passed
+        if is_at_desk and ((current_time - self.last_update_time) >= ECTS_UPDATE_INTERVAL):
+            self.ects_balance += self.ects_per_second
+            # reset timer
+            self.last_update_time = current_time
+
+    # beer increases amount of how much ECTS are earned per second
+    def upgrade_rate(self, extra_ects):
+        self.ects_per_second += extra_ects